generate response: That's perfect. Please book it for 4 tickets.. Intent: book_train. Slots: train-arriveby=15:15, train-bookpeople=4, train-day=saturday, train-departure=broxbourne, train-destination=cambridge
Response: I was able to book you, your reference number is CEP20AFO ., total cost 57.28 payable at the station.. Any other questions?