generate response: Yes, I need 1 ticket and can you please give me the reference number?. Intent: book_train. Slots: train-bookpeople=1, train-day=sunday, train-departure=bishops stortford, train-destination=cambridge, train-leaveat=18:30
Response: Booking was successful, the total fee is 8.08 GBP payable at the station . Reference number is : 6W3KFY5N .