Randomize LuisDialog answer

Hi guys im trying to use Random.Next to try to randomize the answer of luis. Unfortunately it doest seems to work, it always returns zero.

[LuisIntent("Age")]
    public async Task Age(IDialogContext context, LuisResult result)
    {
        Random random = new Random();
        int randomNumber = random.Next(0, 1);
        List<string> Answers = new List<string>();
        Answers.Add("Are you serious?");
        Answers.Add("A million!I am million years old!Any more questions?");

        string message = Answers[randomNumber];
        await context.PostAsync(message);

        context.Done(true);
    }