generate response: From Cambridge and I want to arrive by 20:30.. Intent: find_train. Slots: train-arriveby=20:30, train-day=saturday, train-departure=cambridge, train-destination=norwich
Response: I have a train that would leave at 18:36 and arrive by 19:55. It's 79 minutes long and costs 14.08 pounds. Would you like me to book it?