generate response: I need one with free parking.. Intent: book_train. Slots: hotel-parking=yes, hotel-type=guesthouse, train-arriveby=13:15, train-bookpeople=1, train-day=tuesday, train-departure=cambridge, train-destination=ely
Response: I'm sorry, your train reference number is THUZ22RM. Acorn guest house in the north has wifi and parking. Would you like a reservation?