generate response: Yes, I'd like to book it for 3 people. Could I get the reference number as well?. Intent: book_train. Slots: train-arriveby=19:45, train-bookpeople=3, train-day=sunday, train-departure=cambridge, train-destination=london liverpool street
Response: Booking was successful, the total fee is 39.83 GBP payable at the station. Your reference number is 121NE14K . Can I help with anything else today?