generate response: Can you please book for 4 on Friday at 10:45?. Intent: find_train. Slots: restaurant-area=centre, restaurant-bookday=friday, restaurant-bookpeople=4, restaurant-booktime=10:45, restaurant-food=british, restaurant-name=the oak bistro, train-day=friday, train-departure=cambridge, train-destination=london liverpool street, train-leaveat=13:45
Response: I was unable to book for that timeslot. Can you give me another timeslot to work with?