I'd like to find a train that leaves after 17:00 on Saturday.
Absolutely, I need departure and destination information and a time you need to arrive by.
I'll be departing from Broxbourne and I'd like to go to Cambridge. 
I have 7 available. The first leaves at 17:32, and arrives at 18:32. Would you like me to book that for you?
I'm not looking to book at the moment, can I just get the train ID? Thanks!
Of course! TR0811 leaves at 17:32, arrives at 18:32, with a duration of 60 minutes. The price is 14.32 pounds. May I assist you with anything else?
That is all I need for today. thank you. Goodbye.
Okay glad I could help. Enjoy your trip.