using System;

​

namespace MyApplication

{

  public class Program

  {

    public static void Main(string[] args)

    {

            string choice;

        do

        {

            Console.WriteLine("Hello, ");

            Console.WriteLine("is it me you're looking for?");

            Console.WriteLine("Yes");

            Console.WriteLine("or");

            Console.WriteLine("No?");

            choice = Console.ReadLine();

            switch (choice)

            {

                case "Yes":

                {   

                    Console.WriteLine("Why?");

                    break;

                }

                case "No":

                {

                    Console.WriteLine("Okay");

                    break;

                }

                case "or":

                {

                    Console.WriteLine("Bye");

                    break;

                }

            }

        }while (choice != "or");

    }

  }

}

​