Hi, I'm trying to find a place to go in the centre. A college would be fun to visit!
Great!  I would be happy to help you find one.  Are you looking for one with free admission?
maybe, give me the address of one please 
There are several college's in the centre.  How about Saint Catharine's College?  It is on King's Parade and has free admission.
Thank you. I also need a train to London Kings cross, arriving by 9
Where will you be departing from, and what day would you like to travel?
I'll be departing from Cambridge, and would like to leave on Tuesday.
I have train TR3343 arriving at london kings cross tuesday at 7:00.  Shall I book that for you?
Yes, I need 4 tickets please. Please send me the reference number.
Your tickets have been reserved, and just to clarify, that train departs at 07:00, and arrives in London, Kings Cross at 07:51. Wouldn't want you to miss the train! Ref#: AQDCG6N8
OK thank you that is all I needed today. 
Have a nice day and thank you for contacting us.