generate response: Can you get me the reference number too?. Intent: book_train. Slots: train-arriveby=15:01, train-bookpeople=1, train-day=saturday, train-departure=cambridge, train-destination=broxbourne, train-leaveat=13:00
Response: Booking was successful, the total fee is 14.32 GBP payable at the station. Your reference number is : TB72NAOO . Can I help with anything else?