public void editTrip()
        {
            if (trip_Models.Count == 0)
            {
                Console.WriteLine("You have no trips to edit");
            }
            else
            {
                Console.WriteLine("Enter trip id you want to edit");
                int        tripId   = Convert.ToInt32(Console.ReadLine());
                Trip_Model editTrip = trip_Models.Find(trip => tripId == trip.id);
                Console.WriteLine("Enter passenger name ");
                String passengerName = Console.ReadLine();
                editTrip.passengerName = passengerName;
                Console.WriteLine("Enter price ");
                String price = Console.ReadLine();
                editTrip.price = price;
                Console.WriteLine("Enter country ");
                String country = Console.ReadLine();
                editTrip.country = country;

                Console.WriteLine("\nYour trips after edit");
                for (int i = 0; i < trips; i++)
                {
                    Console.WriteLine("Trip id : " + trip_Models[i].id + "\n" + "Passenger name : " + trip_Models[i].passengerName + "\n" + "Country : " + trip_Models[i].country + "\n" + "Price : " + trip_Models[i].price + "\n");
                }
            }
        }
 public void deleteTrip()
 {
     if (trip_Models.Count == 0)
     {
         Console.WriteLine("You have no trips to delete");
     }
     else
     {
         Console.WriteLine("You have : " + trip_Models.Count + " trips");
         Console.WriteLine("Enter trip id you want to delete");
         int        tripId      = Convert.ToInt32(Console.ReadLine());
         Trip_Model deletedTrip = trip_Models.Find(trip => tripId == trip.id);
         bool       isDeleted   = trip_Models.Remove(deletedTrip);
         if (isDeleted)
         {
             Console.WriteLine("Now you have : " + trip_Models.Count + " trips");
         }
         else
         {
             Console.WriteLine("Please check trip id");
         }
     }
 }