generate response: My destination is Cambridge and I should arrive by 20:00. Please book tickets for thursday for 4 people. I'll also need the reference number.. Intent: book_train. Slots: hotel-area=north, hotel-bookday=thursday, hotel-bookpeople=4, hotel-bookstay=4, hotel-name=hamilton lodge, hotel-parking=yes, hotel-stars=3, train-arriveby=20:00, train-bookpeople=4, train-day=thursday, train-departure=kings lynn, train-destination=cambridge
Response: Booking was successful, the total fee is 39.2 GBP payable at the station . Reference number is : FZ0XR4CR .