generate response: Yes, that train would work better for me. Can you book tickets for 7 people please?. Intent: book_train. Slots: train-bookpeople=7, train-day=thursday, train-departure=cambridge, train-destination=bishops stortford, train-leaveat=20:15
Response: Booked! Reference number is S6S3LN7B . You will pay 70.7 GBP at the station.