generate response: I need to depart cambridge and head to the stansted airport and arrive by 12:15. Intent: find_train. Slots: train-arriveby=12:15, train-day=tuesday, train-departure=cambridge, train-destination=stansted airport
Response: There are several options for you, leaving hourly. The TR7293 leaves at 11:40 and arrives at 12:08. Would you like me to book that for you, or perhaps an earlier one?