generate response: Let's try for saturday, but if that is not available then tuesday would be fine. Intent: book_train. Slots: hotel-bookday=saturday, tuesday, hotel-bookpeople=7, hotel-bookstay=4, hotel-name=alexander bed and breakfast, train-bookpeople=7, train-day=saturday, train-departure=broxbourne, train-destination=cambridge, train-leaveat=21:30
Response: I was able to book you for Saturday.