generate response: That's perfect. Can you book for 4 people please?. Intent: book_train. Slots: train-arriveby=17:30, train-bookpeople=4, train-day=sunday, train-departure=cambridge, train-destination=bishops stortford
Response: Booking was successful, the total fee is 32.32 GBP payable at the station . Reference number is : 4YOCRING .