Yes I would like to stay in a guesthouse that is moderately priced.
Sure, acorn guest house has 4 stars, would you like me to book it? 
I need a place in the north, with free wifi.
You have about 8 places that would fit your criteria. Almost all are 4 star rated. If you don't mind a recommendation, the Limehouse is known as one of the best.
That sounds good please book me a room for 1 person staying 4 nights starting from Saturday.
I am sorry.  It appears that the hotel does not have anything available.  Would you like to try a shorter stay or a different check in date?
What about 3 nights?
Okay, you're all set! Reference number is I198LDZ3.
i am also looking for  a place to go in town, college maybe? 
There are no colleges in the north however Christ's college in the centre is nice with no entrance fee. Would you like the address?
Actually, could you give me the postcode?  Thanks!
Christ's College postcode is cb23bu and address is saint andrew's street
Thank you. Also, what is the entrance fee if any?
There is no entrance fee. Would you like the phone number?
No, thanks. You were tremendously helpful. Have a great day!
You too!  Please let us know if you need anything else!