generate response: I'll be leaving London Liverpool Street on Monday.. Intent: find_train. Slots: hotel-area=east, hotel-bookday=monday, hotel-bookpeople=4, hotel-bookstay=2, hotel-name=a and b guest house, hotel-pricerange=moderate, hotel-stars=4, hotel-type=guesthouse, train-arriveby=16:15, train-day=monday, train-departure=london liverpool street, train-destination=cambridge
Response: TR6226 arrives at 15:07 do you want me to book it for you? The cost is 16.60 pounds per ticket.