I'm looking for a place to stay in Cambridge.  Where would you recommend?
Several good choices come to mind, what part of town are you looking to stay in?
any part but should have free parking and moderately priced. should also be a star of 4
I have 9 entries, all of them are guesthouses. Is that acceptable?
Do you have any thing that is not a guesthouse in other areas?
No I am sorry all that are available are guesthouses
Yes. Monday, two nights three people. 
I'm sorry but there are no hotels available with those specifications. Would you like to look in a different area?
Do you have any of the guesthouses in the centre?
No, sorry I don't. Would you like to try a different area?
It doesn't matter where the guesthouse is! I'm sorry, a hotel or guesthouse is absolutely fine, the only thing that matters is free parking, 4 stars, and in the moderate price.
The Acorn Guest House matches the criteria you are looking for. Would you like to make reservations?
Yes please. There's 3 of us and we want to check in on Monday and stay for just 2 nights
Would you like me to book it for you ?