generate response: No, there is not. Any will be fine. I'll need tickets for 4 people, please?. Intent: book_train. Slots: train-bookpeople=4, train-day=tuesday, train-departure=cambridge, train-destination=london kings cross, train-leaveat=11:30
Response: Booking was successful! You leave at 15:00 and arrive at 15:51. Reference number 68ATC774 .