static void GetSortMethodBasedOnUserInput()
        {
            ResterauntFunctions resterauntFunctions = new ResterauntFunctions();
            ReviewFunctions     reviewFunctions     = new ReviewFunctions();

            string input = string.Empty;

            Console.WriteLine("Press c to sort by city \n" +
                              "Presss n to sort by Name");

            input = Console.ReadLine();
            input = input.ToLower().Trim();

            switch (input)
            {
            case "c":
                Console.WriteLine("enter a city Name");

                var results = resterauntFunctions.SortbyCity(Console.ReadLine());
                foreach (var item in results)
                {
                    Console.WriteLine(item.Name);
                }
                Console.ReadLine();
                break;

            case "n":
                break;

            case "back":
                UserCommandOptions();
                break;

            case "q":
                Environment.Exit(0);
                break;

            default:
                Console.WriteLine("enter either n or c to sort by name or city \n " +
                                  "press q to exit press back to go back");
                break;
            }
        }