generate response: That's great. Can you book that train for 2 people, please?. Intent: book_train. Slots: train-arriveby=11:00, train-bookpeople=2, train-day=sunday, train-departure=cambridge, train-destination=stansted airport
Response: Booking was successful, the total fee is 16.16 GBP payable at the station . Reference number is : QMYCRLDH .