C#

/*
 * Created by StackOverload
 * Date: 12/9/2013
 * Time: 7:55 PM
 * Last updated: 12/9/2013 18:49
 * Version: 0.1
 */
using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Windows.Forms;
using System.Speech.Recognition;
using System.Speech.Synthesis;

namespace Jarvis
{
    public partial class MainForm : Form
    {
        SpeechRecognitionEngine listener = new SpeechRecognitionEngine();
        SpeechSynthesizer JARVIS = new SpeechSynthesizer();
        Random rnd = new Random();

        //String variables
        string userFirst = "Jacob";
        string userLast = "Cross";
        string userTitle = "Mr";
        string userGender = "Sir";
        //Integer variables
        int rndGreet;
        int rndLeave;

        public MainForm()
        {
            InitializeComponent();
        }

        void MainFormLoad(object sender, EventArgs e)
        {
            listener.SetInputToDefaultAudioDevice();
            listener.LoadGrammar(new DictationGrammar());
            listener.LoadGrammar(new Grammar(new GrammarBuilder(new Choices(File.ReadAllLines(@"C:\JARVIS\Grammar\Commands.txt")))));
            listener.SpeechRecognized += new EventHandler<SpeechRecognizedEventArgs>(listener_SpeechRecognized);
            listener.RecognizeAsync(RecognizeMode.Multiple);
        }

        //Voice reconized event void
        void listener_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
        {
            string s = e.Result.Text;
            switch(s)
            {
                //Greetings
                case "Hello Jarvis":
                case "Hello":
                case "Hey Jarvis":
                case "Hey":
                case "Hi":
                case "Hi Jarvis":
                    Greet();
                    break;

                //Closing
                case "Goodbye Jarvis":
                case "Goodbye":
                case "Close Jarvis":
                    leave();
                    break;
            }
        }

        void Greet()
        {
            //Choose random greeting
            rndGreet = rnd.Next(1, 8);
            switch(rndGreet)
            {
                case 1:
                    JARVIS.Speak("Hello, " + userGender);
                    break;
                case 2:
                    JARVIS.Speak("Hello, " + userTitle + " " + userLast);
                    break;
                case 3:
                    JARVIS.Speak("Hello, " + userFirst);
                    break;
                case 4:
                    JARVIS.Speak("Welcome, " + userGender);
                    break;
                case 5:
                    JARVIS.Speak("Welcome, " + userTitle + " " + userLast);
                    break;
                case 6:
                    JARVIS.Speak("Welcome, " + userFirst);
                    break;
                case 7:
                    JARVIS.Speak("Welcome back");
                    break;
                case 8:
                    JARVIS.Speak("Good to see you");
                    break;
            }
        }

        void  leave()
        {
            rndLeave = rnd.Next(1, 6);
            switch(rndLeave)
            {
                case 1:
                    JARVIS.Speak("Goodbye, " + userGender);
                    break;
                case 2:
                    JARVIS.Speak("Good day, " + userGender);
                    break;
                case 3:
                    JARVIS.Speak("Goodbye, " + userTitle + " " + userLast);
                    break;
                case 4:
                    JARVIS.Speak("See you later, " + userFirst);
                    break;
                case 5:
                    JARVIS.Speak("Good day, " + userFirst);
                    break;
                case 6:
                    JARVIS.Speak("Goodbye");
                    break;
            }
            Close();
        }

    }
}