Prototype-pattern.cs

abstract class GirlFriend
    {
        public string name { get; set; }
        public string say { get; set; }
        public string response { get; set; }

        public GirlFriend(string name, string say, string response)
        {
            this.name = name;
            this.say = say;
            this.response = response;
        }
    }

    class Uyen : GirlFriend
    {
        public Uyen(string name, string say, string response) : base(name, say, response)
        {
        }
    }


    class Program
    {
        static void Main(string[] args)
        {
            Console.InputEncoding = Encoding.UTF8;
            Console.OutputEncoding = Encoding.UTF8;

            Uyen uyen = new Uyen("Uyên", "Em ăn cơm chưa", "Anh ăn cơm rồi");
            Console.WriteLine($"{uyen.name}, {uyen.say}, {uyen.response}");
            
            Console.ReadLine();
        }
    }