public void onSpeak(Line line) {
		String name = line.getString("name"), text = line.getString("text");
		if (text.startsWith("!")) {
			text = text.substring(1);
			String[] args = text.split(" ");
			Line cmd = new Line(args[0]);
			if (cmd.equals("hello")) {
				speak(String.format("Hi %s, How are you?", name));
			}
		}
	}