You have no trains departing Cambridge to london liverpool street on Wednesday that will arrive by 8:30?
Oh wait I have found you one that departs at 5:59 and arrives in London at 7:27. would that do? Everything else is later.
Yes that is fine. How long is the journey and how much is the ticket by the way?
It will be 88 minutes and the price is 16.60 pounds. Shall I book a ticket?