generate response: Sure that sounds good, I will need 4 tickets please, and the reference number.. Intent: book_train. Slots: train-arriveby=11:30, train-bookpeople=4, train-day=wednesday, train-departure=stansted airport, train-destination=cambridge
Response: Booking was successful, the total fee is 40.4 GBP payable at the station. Reference number is : 67WHT21L .