public static void CreateTripOffer(string username)
        {
            string  date;
            string  time;
            string  source;
            string  destination;
            double  distance;
            string  carModel;
            string  carNumber;
            int     totalSeats;
            decimal totalCost;

            Console.WriteLine("Enter Date for the trip (DD/MM/YYYY)");
            date = Console.ReadLine();
            Console.WriteLine("Enter Time for the Trip (hh:mm)");
            time = Console.ReadLine();
            Console.WriteLine("Enter Source");
            source = Console.ReadLine();
            Console.WriteLine("Enter Destination");
            destination = Console.ReadLine();
            Console.WriteLine("Enter Distance in kms ");
            distance = Convert.ToDouble(Console.ReadLine());
            Console.WriteLine("Enter Car Model");
            carModel = Console.ReadLine();
            Console.WriteLine("Enter Car Number");
            carNumber = Console.ReadLine();
            Console.WriteLine("Enter Total Seats Available");
            totalSeats = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("Enter Total Estimated Cost");
            totalCost = Convert.ToDecimal(Console.ReadLine());

            TripServices.CreateTripOffer(date, time, source, destination, distance, carModel, carNumber, totalSeats, totalCost, username);
            Console.WriteLine("Trip Offer Created!");
            UserMenu(username);
        }