generate response: I need 2 please.. Intent: book_train. Slots: train-bookpeople=2, train-day=friday, train-departure=kings lynn, train-destination=cambridge, train-leaveat=21:15
Response: Booking was successful, the total fee is 19.6 GBP payable at the station. Reference number is : 4J73XCBG . Is there anything else I can help with?