generate response: I will take the 14:34. Can you book that for 4 people and provide me with a reference number please?. Intent: book_train. Slots: train-bookpeople=4, train-day=tuesday, train-departure=cambridge, train-destination=peterborough, train-leaveat=14:15
Response: Yes certainly. I have you booked and your reference number is 8CRQIYB0 .