generate response: I need to arrive by 17:45.. Intent: find_train. Slots: train-arriveby=17:45, train-day=saturday, train-departure=cambridge, train-destination=stansted airport, train-leaveat=16:30
Response: I found one train TR2001 which departs Cambridge at 16:40 and arrives at Stansted Airport at 17:08. Would you like me to book it for you?