Hi, I'm planning a trip to Cambridge.  Can you suggest some places I could visit in town?
Sure, there's lots to do here? Is there a certain area or type you're looking for?
What's your favorite college to visit? I'm not picky about the area.
There are 18 of them in the city. Do you mind an entrance fee or would you prefer one that's free?
Please just tel me which one you think best, then provide the area it is in and the phone number. 
queens' college is pretty great. It's in the west. Their number is 01223335511.
That's fine.  I also need a train from Cambridge to stevenage. 
What day would you like to travel, and what time would you leave or arrive by?
I would like that the train should leave on saturday and after 16:15.
Alright, TR4216 leaves at 17:21. Would you like me to book you passage?
Yes, book me for 1 please.
You're all set. Your reference number is R55DTSWS and there will be a 10.24 GBP fee due at the station.
What is the arrival time?
The arrival time for that train is 18:10, is there anything else I can help you with?
What is the train ID? 
The train ID is TR4216. Can I help you with anything else today?
No. Thank you
Have a great day!