generate response: Yes please, a ticket for one, and may I also know the price?. Intent: book_train. Slots: train-arriveby=21:15, train-bookpeople=1, train-day=friday, train-departure=stansted airport, train-destination=cambridge
Response: Booked! The price is 10.1 pounds to be paid at the station. Reference number: 2CDCW6I7 .