Airport

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp31
{
    class Program
    {
        static void Main(string[] args)
        {
            DateTime now = DateTime.Now;


            // Passenger first
            Passenger p1 = new Passenger("Fouz","milkyway","Andromeda","1","first");

            // Plane
            Plane balerion = new Plane();

            // Flight
            Flight f1 = new Flight(balerion, p1);

            Airport airport = new Airport(f1);
            Console.WriteLine(airport);

            Console.ReadKey();
        }
    }
    class Passenger
    {
        string name;
        string origin;
        string destination ;
        string passengers;
        string pclass;

        public Passenger(string n, string ori, string dest, string pass, string pc)
        {
            name = n; origin = ori; destination = dest; passengers = pass; Pclass = pc;

        }
        public string Pclass
        {
            get { return pclass; }
            // shorthand if-else
            set
            {
                if (value == "economy" || value == "bussines" || value == "first")
                {
                    pclass = value;
                }
                // default value is economy.
                else
                {
                    pclass = "economy";
                }
            }
        }
        public string Book()
        {
            string info = "BOOK INFORMATION: \n"+"NAME: "+name+"\nFROM: "+origin+" TO: "+destination+"\nCLASS: "+pclass;
            return info;
        }
    }

    //
    class Plane
    {
        string type;
        string seats;
        public Plane(string Type = "Balerion" , string Seats = "150")
        {
            type = Type; seats = Seats;
        }

        //methods

        public void TakeOff()
        {
            Console.WriteLine("*Taking off*");
        }
        public void Land()
        {
            Console.WriteLine("*Landing*");
        }

        public string Info()
        {
            return this.type + ", seats: " + this.seats;
        }

    }
    //

    class Flight
    {
        string flightN;
        string gatee;

        Passenger P11;
        Plane P1;
        public Flight(Plane p1, Passenger p11, string num = "11", string gate = "7")
        {
            P1 = p1;
            P11 = p11;

            flightN = num;
            gatee = gate;

        }

        // property
        public string Info()
        {
            return P11.Book()+"\nON PLANE: "+P1.Info()
                +"\nFlight Info:\n"+"Flight Number: "+this.flightN+", Gate: "+this.gatee+ "\n************\n";
        }
    }

    class Airport
    {
        string name;
        string city;
        Flight F1;
        public Airport(Flight f1,string n = "bonefire", string c = "Raccoon")
        {
            F1 = f1;
            name = n;
            city = c;
        }
        public override string ToString()
        {
            return string.Format("Airpor Info: \nAirport Name: "+this.name+", City: "+this.city+ "\n**********\n"+F1.Info());
        }

    }


}