I want to eat someplace with unusual food. Price is no object. What can you suggest?
I'm sorry, there is nothing meeting your criteria. What other type of cuisine  would you like?
Hmm.  I'm not sure.  It needs to be expensive, and I really had my heart set on unusual.
There are no restaurants anywhere in Cambridge that describe their cuisine as "unusual." Would you like to broaden your search criteria?
Then find a European one.
I have 5 european restaurants to choose from. I have options in the centre, north and west. Which would you prefer to dine in? 
I would like one in the centre area, please.
How about Eraina, which serves European food and is located in the centre of town and is in the expensive price range?
That sounds good! Can you book a table for 6 people at 12:45 on Wednesday?
That booking was successful, the table will be reserved for 15 minutes. Your reference number is 4OQDTI8C. Is there anything else I can help you with?
I think that is all I need. Thank you.
You're welcome, enjoy your meal.