generate response: Yes that works. Can you book it for 5 people and send me the reference number?. Intent: book_train. Slots: train-bookpeople=5, train-day=friday, train-departure=bishops stortford, train-destination=cambridge, train-leaveat=20:30
Response: Ok I have 5 tickets booked on TR4549. Your reference number is NTPYZBY4 .