generate response: I actually need a train going to London Kings Cross leaving Cambridge after 14:45. For six people.. Intent: book_train. Slots: train-bookpeople=6, train-day=friday, train-departure=cambridge, train-destination=london kings cross, train-leaveat=14:45
Response: There is a train that leaves at 15:00 that has 6 tickets available, shall I book it for you?