generate response: Yes, that's perfect. I need tickets for 4 people, please.. Intent: book_train. Slots: train-arriveby=14:30, train-bookpeople=4, train-day=sunday, train-departure=cambridge, train-destination=london liverpool street
Response: Booking was successful, the total fee is 66.4 GBP payable at the station . Reference number is : B8QZ32WO. Can I help with anything else?