generate response: Yes, I'm leaving from Cambridge. Departure time doesn't matter, but I need to arrive by 18:15.. Intent: find_train. Slots: train-arriveby=18:15, train-day=friday, train-departure=cambridge, train-destination=birmingham new street
Response: There are 12 trains available for you and the first one leaves at 05:01. Can I book a seat for you or do you prefer a later departure time?