Dear Mr. Uninterested,
Hi how are you doing today? Oh ok, you don't want to answer me? That's cool, but please don't be upset when I do not come back to your table. Yes, I will bring your drink and food, but please do not expect me to go out of my way to make any further conversation. When you ignored my attempt to be friendly, that hurt my feelings, and I do not want to talk to you anymore. Enjoy your meal...I hope you don't need anything else because, like you, I'm not interested.