generate response: Thanks so much. I will also need a train leaving Cambridge on Tuesday going to London Liverpool Street no later than 16:30.. Intent: find_train. Slots: restaurant-area=west, restaurant-bookday=monday, restaurant-bookpeople=5, restaurant-booktime=14:45, restaurant-food=dontcare, restaurant-name=thanh binh, restaurant-pricerange=cheap, train-day=tuesday, train-departure=cambridge, train-destination=london liverpool street, train-leaveat=16:30
Response: The closest train to your departure time is the 15:59 out of cambridge, arriving london liverpool at 17:27. Would you like to book tickets on that train?