generate response: Pick your favorite and book it. We are a party of 5 and we'd like to eat late, like 20:30, on the same day as that train you found for me.. Intent: find_train. Slots: train-arriveby=17:45, train-day=monday, train-departure=norwich, train-destination=cambridge
Response: I was not able to book any of those 4 at 20:30, would you like to try an earlier time?