generate response: I will take the postcodes for all 5. I'd also like a train that leaves on Sunday for ely as well if that's possible.. Intent: find_train. Slots: attraction-area=west, attraction-type=college
Response: Churchill College cb30ds, Clare College cb21tl, Clare Hall cb39al, Magdalene College cb30ag, and Queen's College cb39et. And the train from Ely will be departing from where?