public IEnumerable<get_Passenger_By_Email_Result> Get_Passenger_By_EmailBAL(string email, string phonenumber)
 {
     PassengersDAL pdal = new PassengersDAL();
     return pdal.Get_Passenger_By_EmailDAL(email, phonenumber);
 }
 public get_Passenger_By_PNR_Result Get_Passenger_By_PNRBAL(string pnr)
 {
     PassengersDAL pdal = new PassengersDAL();
     return pdal.Get_Passenger_By_PNRDAL(pnr);
 }
 public int Update_PassengersBAL(Passenger p)
 {
     PassengersDAL pdal = new PassengersDAL();
     return pdal.Update_PassengersDAL(p);
 }
 public int Delete_PassengersBAL(string pnr)
 {
     PassengersDAL pdal = new PassengersDAL();
     return pdal.Delete_PassengersDAL(pnr);
 }
 public int Add_PassengersBAL(Passenger p)
 {
     PassengersDAL pdal = new PassengersDAL();
     return pdal.Add_PassengersDAL(p);
 }
 public IEnumerable<getAll_Passengers_Result> GetAll_PassengersBAL()
 {
     PassengersDAL pdal = new PassengersDAL();
     return pdal.GetAll_PassengersDAL();
 }