generate response: Yes, that works. Can you book 7 tickets please?. Intent: book_train. Slots: train-bookpeople=7, train-day=friday, train-departure=stevenage, train-destination=cambridge, train-leaveat=13:45
Response: Booking was successful, the total fee is 89.6 GBP payable at the station . Reference number is : OS6SO15N .