generate response: Oh, I need to leave on Tuesday and need to arrive in Broxbourne by 18:30. I need to book for 5, with a reference number please.. Intent: book_train. Slots: train-arriveby=18:30, train-bookpeople=5, train-day=tuesday, train-departure=cambridge, train-destination=broxbourne
Response: The reference number is OLH83LVT