diff --git a/requirements.txt b/requirements.txt
index c70a816..6d32ab6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,9 +1,23 @@
+annotated-types==0.7.0
 blinker==1.8.2
+bson==0.5.10
 click==8.1.8
-flask==3.0.3
-importlib-metadata==8.5.0
+colorama==0.4.6
+dnspython==2.7.0
+email_validator==2.2.0
+Flask==3.0.3
+Flask-JWT-Extended==4.7.1
+idna==3.10
+importlib_metadata==8.5.0
 itsdangerous==2.2.0
-jinja2==3.1.5
+Jinja2==3.1.5
 MarkupSafe==2.1.5
-werkzeug==3.0.6
-zipp==3.20.2
+pydantic==2.10.6
+pydantic_core==2.27.2
+PyJWT==2.10.1
+pymongo==4.11.1
+python-dateutil==2.9.0.post0
+six==1.17.0
+typing_extensions==4.12.2
+Werkzeug==3.0.6
+zipp==3.20.2
\ No newline at end of file
diff --git a/src/app.py b/src/app.py
index 900d289..f6a5b3a 100644
--- a/src/app.py
+++ b/src/app.py
@@ -1,13 +1,27 @@
 from flask import Flask
 from pymongo import MongoClient
 from flask_jwt_extended import JWTManager
+
+from config import Config
 from singletons.database_singleton import DatabaseSingleton
 
+from controllers.user_controller import user_blueprint
+from controllers.reservation_controller import reservation_blueprint
+
 app = Flask(__name__)
 app.config['JWT_SECRET_KEY'] = Config.JWT_SECRET_KEY
+
+app.register_blueprint(user_blueprint, url_prefix='/user')
+app.register_blueprint(reservation_blueprint, url_prefix='/reservation')
+
 jwt = JWTManager(app)
 client = MongoClient(Config.MONGO_URI)
 db = DatabaseSingleton.get_instance()
 
+if db is not None:
+    print('Connected to MongoDB')
+else:
+    print('Failed to connect to MongoDB')
+
 if __name__ == '__main__':
     app.run(debug=True)
diff --git a/src/config.py b/src/config.py
index 95e76a3..ef679bd 100644
--- a/src/config.py
+++ b/src/config.py
@@ -1,6 +1,6 @@
 import os
 
 class Config:
-    DB_NAME = os.getenv('DB_NAME', 'meeting_reservation')
+    DB_NAME = os.getenv('DB_NAME', 'talkpal')
     JWT_SECRET_KEY = os.getenv('JWT_SECRET_KEY', 'your_jwt_secret_key')
     MONGO_URI = os.getenv('MONGO_URI', 'mongodb://localhost:27017/')
\ No newline at end of file
diff --git a/src/controllers/reservation_controller.py b/src/controllers/reservation_controller.py
index 40b0303..13e6393 100644
--- a/src/controllers/reservation_controller.py
+++ b/src/controllers/reservation_controller.py
@@ -13,9 +13,9 @@ reservation_blueprint = Blueprint('reservation', __name__)
 @jwt_required()
 def create_reservation():
     current_user = get_jwt_identity()
-    reservation = Reservation(**request.json.dict(), creator=current_user)
-    ReservationRepository.insert(reservation)
-    return jsonify({"message": "Reservation created successfully"})
+    reservation = Reservation(**request.json, creator=current_user)
+    id = ReservationRepository.insert(reservation)
+    return jsonify({"message": "Reservation created successfully", "id": id})
 
 @reservation_blueprint.route('/<reservation_id>', methods=['DELETE'])
 @jwt_required()
@@ -43,7 +43,7 @@ def change_reservation(reservation_id):
 @jwt_required()
 def get_reservation(reservation_id):
     try:
-        reservation = ReservationRepository.get_by_id()
+        reservation = ReservationRepository.get_by_id(reservation_id)
         if not reservation:
             return jsonify({"error": "Reservation not found"}), 404
     except:
@@ -55,11 +55,11 @@ def get_reservation(reservation_id):
 @jwt_required()
 def list_reservations():
     filters = {
-        "start_date": request.args.get("start_date"),
-        "end_date": request.args.get("end_date"),
+        "date": request.args.get("date"),
         "room_id": request.args.get("room_id")
     }
     filters = {k: v for k, v in filters.items() if v is not None}
 
     reservations = ReservationRepository.list_all(filters)
+    print(reservations)
     return jsonify(reservations)
\ No newline at end of file
diff --git a/src/controllers/user_controller.py b/src/controllers/user_controller.py
index ccc1fa3..85ff58f 100644
--- a/src/controllers/user_controller.py
+++ b/src/controllers/user_controller.py
@@ -12,9 +12,9 @@ user_blueprint = Blueprint('user', __name__)
 @validate_request(RegisterUserDTO)
 def register_user():
     data = request.json
-    if UserRepo.find_by_username(data.username):
+    if UserRepo.find_by_username(data['username']):
         return jsonify({"error": "User already exists"}), 409
-    user = User(**data.dict())
+    user = User(**data)
     UserRepo.insert(user)
     return jsonify({"message": "User registered successfully"})
 
diff --git a/src/dtos/reservation_dtos.py b/src/dtos/reservation_dtos.py
index 870ce57..5b64440 100644
--- a/src/dtos/reservation_dtos.py
+++ b/src/dtos/reservation_dtos.py
@@ -1,17 +1,22 @@
 from typing import Optional
 from pydantic import BaseModel
-from datetime import datetime
+
+from dtos.time_dtos import TimeDTO
 
 class CreateReservationDTO(BaseModel):
     title: str
     description: Optional[str] = None
     room_id: str
-    start_date: datetime
-    finish_date: datetime
+    date: str
+    start_time: TimeDTO
+    finish_time: TimeDTO
+    color: int
 
 class UpdateReservationDTO(BaseModel):
     title: Optional[str] = None
     description: Optional[str] = None
     room_id: Optional[str] = None
-    start_date: Optional[datetime] = None
-    finish_date: Optional[datetime] = None
\ No newline at end of file
+    date: Optional[str] = None
+    start_time: Optional[TimeDTO] = None
+    finish_time: Optional[TimeDTO] = None
+    color: Optional[int] = None
\ No newline at end of file
diff --git a/src/dtos/time_dtos.py b/src/dtos/time_dtos.py
new file mode 100644
index 0000000..aa1cc96
--- /dev/null
+++ b/src/dtos/time_dtos.py
@@ -0,0 +1,5 @@
+from pydantic import BaseModel
+
+class TimeDTO(BaseModel):
+    hours: int
+    minutes: int
\ No newline at end of file
diff --git a/src/dtos/user_dtos.py b/src/dtos/user_dtos.py
index 92ceb35..289e6f7 100644
--- a/src/dtos/user_dtos.py
+++ b/src/dtos/user_dtos.py
@@ -1,13 +1,14 @@
+from typing import Optional
 from pydantic import BaseModel, EmailStr
 
 class RegisterUserDTO(BaseModel):
     username: str
     password: str
-    email: EmailStr
-    first_name: str
-    last_name: str
-    department: str
-    position: str
+    email: Optional[EmailStr] = None
+    first_name: Optional[str] = None
+    last_name: Optional[str] = None
+    department: Optional[str] = None
+    position: Optional[str] = None
     is_admin: bool = False
 
 class LoginUserDTO(BaseModel):
diff --git a/src/models/reservation_model.py b/src/models/reservation_model.py
index 14aae56..3522464 100644
--- a/src/models/reservation_model.py
+++ b/src/models/reservation_model.py
@@ -1,8 +1,18 @@
+from models.time_model import Time
+
 class Reservation:
-    def __init__(self, title, description, room_id, creator, start_date, finish_date):
+    def __init__(self, title, room_id, creator, date, start_time, finish_time, color, description=None):
         self.title = title
         self.description = description
         self.room_id = room_id
         self.creator = creator
-        self.start_date = start_date
-        self.finish_date = finish_date
\ No newline at end of file
+        self.date = date
+        self.start_time = Time(**start_time)
+        self.finish_time = Time(**finish_time)
+        self.color = color
+
+    def dict(self):
+        dict = self.__dict__.copy()
+        dict["start_time"] = self.start_time.dict()
+        dict["finish_time"] = self.finish_time.dict()
+        return dict
\ No newline at end of file
diff --git a/src/models/time_model.py b/src/models/time_model.py
new file mode 100644
index 0000000..11cc0a5
--- /dev/null
+++ b/src/models/time_model.py
@@ -0,0 +1,7 @@
+class Time:
+    def __init__(self, hours, minutes):
+        self.hours = hours
+        self.minutes = minutes
+
+    def dict(self):
+        return self.__dict__
\ No newline at end of file
diff --git a/src/models/user_model.py b/src/models/user_model.py
index cf7a8f6..0c77754 100644
--- a/src/models/user_model.py
+++ b/src/models/user_model.py
@@ -1,6 +1,9 @@
 class User:
-    def __init__(self, username, email, first_name, last_name, department, position, is_admin=False):
+    def __init__(self, username, password, email=None, \
+                 first_name=None, last_name=None, department=None, \
+                 position=None, is_admin=False):
         self.username = username
+        self.password = password
         self.email = email
         self.first_name = first_name
         self.last_name = last_name
diff --git a/src/repos/reservation_repo.py b/src/repos/reservation_repo.py
index 197bd60..e7dfafb 100644
--- a/src/repos/reservation_repo.py
+++ b/src/repos/reservation_repo.py
@@ -1,3 +1,6 @@
+import json
+from bson import ObjectId, json_util
+
 from singletons.database_singleton import DatabaseSingleton
 
 class ReservationRepository:
@@ -5,7 +8,7 @@ class ReservationRepository:
 
     @classmethod
     def insert(cls, reservation):
-        cls.db.reservation.insert_one(reservation.__dict__)
+        return str(cls.db.reservation.insert_one(reservation.dict()).inserted_id)
 
     @classmethod
     def delete(cls, reservation_id):
@@ -24,17 +27,24 @@ class ReservationRepository:
             return None
 
     @classmethod
-    def get_by_id(cls):
+    def get_by_id(cls, reservation_id):
         return list(cls.db.reservation.find({"_id": ObjectId(reservation_id)}))
 
     @classmethod
     def list_all(cls, filters=None):
         query = {}
         if filters:
-            if "start_date" in filters:
-                query["start_date"] = {"$gte": filters["start_date"]}
-            if "end_date" in filters:
-                query["start_date"] = {"$lte": filters["end_date"]}
+            if "date" in filters:
+                query["date"] = {"$gte": filters["date"]}
             if "room_id" in filters:
                 query["room_id"] = filters["room_id"]
-        return list(cls.db.reservation.find(query))
\ No newline at end of file
+
+        results = cls.db.reservation.find(query)
+
+        reservations = []
+        for res in results:
+            res["id"] = str(res["_id"])
+            del res["_id"]
+            reservations.append(res)
+        
+        return reservations
\ No newline at end of file