I need a train departing from Stansted Airport on Friday.
Sure. Where are you traveling too and what time would you like to leave?
I need to arrive in Cambridge by 9:15.
I have 4 trains that will arrive by 9:15 in Cambridge. What time would you like to depart Stansted Airport?
No preference on departure time, but I will need to book for 5 people.
Reference number is : 1LD6SOW1. Anything else?
Yes, I'm looking for a college to visit in the centre of town. 
There are several colleges in the centre.  May I suggest christ's college or downing college, both have free entrance fees.
what's the entrance fee for christ's college?
The admission is free. 
Ok, thanks. Can I get the phone number and postcode as well?
Post code is cb23bu and phone number is 01223334900. Is there anything else I can assist you with today?
That is everything thank you.
It was my pleasure to help. Have a good day.