generate response: Yes please, book 4 tickets for me.. Intent: book_train. Slots: train-arriveby=13:15, train-bookpeople=4, train-day=friday, train-departure=birmingham new street, train-destination=cambridge
Response: Booked, reference number is T610U5HK . You pay 300.39 GBP at the station. Your train leaves at 9:40.