generate response: yes 2 tickets please and I need the reference #. Intent: book_train. Slots: train-bookpeople=2, train-day=tuesday, train-departure=cambridge, train-destination=birmingham new street, train-leaveat=12:45
Response: I've book train TR1051, for 2 people, departing Cambridge at 13:01. The reference number is X3CK0YMZ . How can I further assist you?