Hello how may I help you? How do time zones work? I can't tell how they work but I can calculate times in different cities and countries for you. Ok, what time is it in New York if it is midnight in London? Ok, it is currently 6am in New York if it is midnight in London. Ok, are there any flights between the two for tomorrow? There is two flights available tomorrow between New York and London. Ok, please book the earlier one. I've booked your flight! You leave at 6:21 AM tomorrow. Ok, thanks! have a safe trip.