generate response: Can you try 10:45 on Saturday again? Maybe there was a cancellation.. Intent: find_train. Slots: restaurant-area=south, restaurant-bookday=saturday, restaurant-bookpeople=6, restaurant-booktime=10:45, restaurant-food=european, restaurant-pricerange=moderate, train-day=saturday, train-departure=cambridge, train-destination=london liverpool street, train-leaveat=18:45
Response: I'm sorry, again, that time is not available.