generate response: I need to book a train going to bishops stortford from Cambridge. It needs to arrive by 14:15 on saturday. I need 8 tickets. Can I please get a reference number.. Intent: book_train. Slots: train-arriveby=14:15, train-bookpeople=8, train-day=saturday, train-departure=cambridge, train-destination=bishops stortford
Response: Absolutely! You are booked for 8 seats on TR5643 leaving at 13:29 and arriving at 14:07. The cost is 64.64 GBP due at the station. Reference: Y6865OET