What are some attributes that this class diagram can have. It's a online ariline booking system

3 Passenger Reservation + ReservationID: int Reservation + PassengerlD: int FirstName: string LastName: String Email:string *phoneNumber. string Adrress: string +SectoriD: int ReservationStatus: string +SeatReservations: String ReservationDate: string ReservationID: int eservationSector FlightCalss: string NumberOfPassengers: string Payment PaymentAmount String Payment 1 ReservationPay G ReservationPayment 1 FlightSector 0.ReservationID: int FlightSector PaymentStatus: string PaymentD: int + SectoriD: int ate: Datetime ActualTakeoffTime: Datetime + ActualArraivalTime: Datetime +Origin: string +Destination: string 1 FlightSector FlightSchedule 0 . AirPort ort +AirportiD: int AirportName: string DepartureTime: Datetime AirportLocation:string +DepartureTime: Datetime E FlightCosts ArraivalTime: Datetime Fli Origin: string dule CostlD:int Destination: string +FlightCost: string