generate response: I would like to arrive in time for lunch, preferably around 11:00. Intent: find_train. Slots: train-day=sunday, train-departure=cambridge, train-destination=stevenage, train-leaveat=14:45
Response: I don't have any for that time frame, every train is running after 12:00. I can book you for one that leaves at 15:21. Is that alright?