generate response: I need to depart from Cambridge and arive in Peterborough, Wednesday, no later than 20:15.. Intent: find_train. Slots: train-arriveby=20:15, train-departure=cambridge, train-destination=peterborough
Response: Train # TR4875 leaves Cambridge on Wednesday 19:06 and arrives in Peterborough at 19:56. Would you like me to book your ticket?