generate response: I'd like you to book it for Wednesday night for 4 people.. Intent: book_train. Slots: hotel-area=east, hotel-bookday=wednesday, hotel-bookpeople=4, hotel-name=express by holiday inn cambridge, hotel-parking=yes, hotel-pricerange=expensive, train-arriveby=12:43, train-bookpeople=4, train-day=wednesday, train-departure=stevenage, train-destination=cambridge, train-leaveat=11:54
Response: How many nights would you like to stay?