generate response: Yeah. I need to book for 7 people.. Intent: book_train. Slots: train-bookpeople=7, train-day=tuesday, train-departure=cambridge, train-destination=bishops stortford, train-leaveat=16:30
Response: Booking was successful, the total fee is 70.7 GBP payable at the station . Reference number is : C2KPV8JC .