generate response: Sounds good, please book me for four people and can I get a reference number?. Intent: book_train. Slots: train-arriveby=21:15, train-bookpeople=4, train-departure=cambridge, train-destination=peterborough
Response: Booking was successful, the total fee is 66 GBP payable at the station, your reference number is 2WXSC5I1 . Will that be all?