generate response: Yes, please. I'll need tickets for 5 people.. Intent: book_train. Slots: train-bookpeople=5, train-day=sunday, train-departure=stansted airport, train-destination=cambridge, train-leaveat=11:15
Response: Booking was successful, the total fee is 40.4 GBP payable at the station . Reference number is : 38E1SSYP .