generate response: Were you able to book it for 4 people?. Intent: book_train. Slots: train-bookpeople=4, train-day=sunday, train-departure=cambridge, train-destination=bishops stortford, train-leaveat=15:15
Response: I was able to book 4 tickets. The total fee will be 32.32 pounds, payable at the station. The reference number is BPUJ9ISP . Can I help you with anything else?