I'm interested in visiting colleges while in town, can you please recommend some?
I can recommend clare hall and christ's college.  You need phone numbers for either one?
I would like the post code for clare hall please.
Sure, that post code is cb39al. Can I further assist you?
Yes I also need a train to stansted airport on sunday
Sure. Where will you be departing from, and what time?
I am leaving from Cambridge. I would like to leave sometime after 18:00. 
Okay the TR5009 leaves at 18:40. 
That sounds great, do I call to book a seat or can you help me?
I would be more than happy to help you book! Tickets are 8.08 pounds. How many tickets would you like me to book for your trip?
Please book for 6 people. 
Booking was successful, the fee is 48.48 GBP payable at the station .
Reference number is 4ESBHTB0.  Is there anything else I can help you with?
No, thanks. That's all I needed.
I'm glad I was able to help you. Thanks for using our service have a nice day.