generate response: Just the 1 ticket, please.. Intent: book_train. Slots: train-arriveby=21:30, train-bookpeople=1, train-day=friday, train-departure=cambridge, train-destination=stansted airport
Response: The train closest to your requested arrival time is the TR9595, leaving Cambridge at 20:40 and arrives at Stansted Airport at 21:08. Would you like me to book you a ticket?