Can you help me find a college located in the centre. I seemed to have misplaced the information on it.
There are sveral colleges in the centre. Do you remember the name? 
I do not. Could I have the addresses for all of them and the entrance fees?
I would recommend Downing College on Regent Street.  It has free admission.  There are a number of others, but that is the one I would suggest.
That sounds fantastic. Could I get the address?
Address, post code first is cb21dq	regent street. May I help you with any thing else?
Yes, I am also looking for a train that leaves Stansted Airport on Friday and arrives in Cambridge by 21:00.
There are 15 trains that match those requirements. Is there any time you want to leave?
I'll take whatever the last train is that will get me there before 21:00. If you can just give me the train ID please. Thanks. 
Sure, that would be train TR5097 and it arrives at 20:52.
Great!  Thank you so much for your help.
You're welcome. Is there anything else I can do for you?
No thanks. That will be all. Goodbye. 
It's been a pleasure. Goodbye.