I'm just looking for a place to sleep tonight in Cambridge.
Sure, there are 33 hotels available. Do you have any other criteria?
Could it be in the north and include free wifi please?
There are several places to stay in the north that offer free internet.  do you have a preference of stars and price range? 
No. But it should be a guesthouse.
There are several in the moderate price range and 1 in the cheap range, do you have a preference?
I would like a guesthouse in the moderate price range for one person and four nights, starting on Sunday. 
There are several options, but I would definitely recommend the limehouse. If that sounds good, I can book it for you. 
Yes please. I need it for 1 person for 4 nights starting on Sunday. 
I have made those reservations and your reference number is  FLU3B3SI.
i also need a place to dine in the north
I found 9 restaurants in the North.  What type of food would you like?
Thank you, I'm looking for a place that serves Chinese food.
What's your budget?
The price doesn't matter.
Would you like to try the Hotpot?
Sure! I need a table for 1 at 16:15 on Sunday.
Ok I will book it for you and get a reference number