I am looking for a train that's going to Cambridge arriving by 16:30. 
I have several trains that fit. Where are you departing?
I'm leaving from London Liverpool Street on Sunday.
I have one leaving at 13:39 and arrive by 15:07. Would you like that one?
What is the travel time on that?
The travel time for that route is 88 minutes. Can I book you a ticket? 
Yes please. I am also looking for a college type attraction in town.
Would you like christ's college it hs free entrance fee.
Sure. What time is is open?
I do not have information on open and close times but here is the phone number if you would like to find out,01223334900.
Great. Thanks for the information.
It will be located in the city centre.