generate response: Sure, book it for 3 people please.. Intent: book_train. Slots: train-arriveby=dontcare, train-bookpeople=3, train-day=thursday, train-departure=london liverpool street, train-destination=cambridge, train-leaveat=17:30
Response: Booking was successful, the total fee is 49.8 GBP payable at the station . Reference number is : N1C90WGA .