I need to find a place to stay with four stars in a moderate price range.
I have 11 different options available. Did you have an area in mind for your stay?
No but I'd like it to include free wifi and be in some kind of guesthouse.
There are 11 hotels that match your search. Would the acorn guest house in the north work for you?
Possibly.  I'd like their address, and to know if they have free parking.
They do offer free parking. Their address is 154 chesterton road.
Great! Also, I need to take a train from ely on Sunday.
OK, and what time will you be traveling?
I need to arrive in cambridge by 20:00 please.
Alright, I have eight trains of that type. They leave 35 minutes after the hour every hour, starting at 5:35 and running until 19:35. Would you like to book?
Can you give me information on the one arriving in Cambridge closest to 20:00. I just need the train ID and price. Thanks
The closest arrival time is 19:52, the trainID is TR4883 and the cost is 3.52 pounds. 
Great. Thank you very much for your help. That is all for today. 
I'm happy to have assisted you! Thank you for using the Cambridge TownInfo centre. Have a nice day!