U: Please find me a hotel in cambridge with 4 star rating and free parking.

S: There are 19 hotels. Was there a price range you are looking for?

U: Thanks for asking.  Moderate suite my pocketbook best.

S: There are nine guest houses that fit your criteria. Are you interested in a particular area of town?

U: yes north will be fine with me

S: May I suggest Acorn Guesthouse? It fits all your criteria. Would you like me to reserve you any rooms?

U: Are the beds comfortable there?
S: No, many guests have complained about the beds recently, so that probably won't work for you. Should I search for something else?