private void detach_Reserve_Tickets(Reserve_Ticket entity)
 {
     this.SendPropertyChanging();
     entity.Flight_Detail = null;
 }
 partial void DeleteReserve_Ticket(Reserve_Ticket instance);
 partial void InsertReserve_Ticket(Reserve_Ticket instance);
 partial void UpdateReserve_Ticket(Reserve_Ticket instance);
 private void detach_Reserve_Tickets(Reserve_Ticket entity)
 {
     this.SendPropertyChanging();
     entity.Passenger = null;
 }