PlaneFlightScheduleRescheduleTakeOffAllowedTimeForTakeOff

using System;
using System.Security.Cryptography;

namespace ConsoleApp15
{
    class Program
    {
        static void Main(string[] args)
        {
            int FlightTime, DepartureTime, Difference, AppropriateDepartureTime, Rescheduled;

            Console.WriteLine("\n==================================");

            Console.WriteLine("\nWelcome to the Plane Departure Time Calculator 2000!");

            Console.Write("\nPlease indicate the Plane's Flight Time (in hours): ");
            FlightTime = int.Parse(Console.ReadLine());

            Console.WriteLine("==================================");

            Console.Write("\nPlease indicate the Plane's Departure Time Between (0 - 24): ");
            DepartureTime = int.Parse(Console.ReadLine());

            Console.WriteLine("==================================");

            if (DepartureTime >= 7)
            {
                Console.WriteLine("Your flight starts at {0} : 00 , enjoy your flight!", DepartureTime);
            }

            else
            {
                if (DepartureTime < 7)
                {

                    Difference = (DepartureTime - 7);

                    AppropriateDepartureTime = (Difference * -1);

                    Rescheduled = (AppropriateDepartureTime + DepartureTime);

                    Console.WriteLine("Your flight was rescheduled by {0} Hours. The Aircraft will take off at {1} : 00", AppropriateDepartureTime, Rescheduled);
                }

            }
        }

    }
}