U: Can you help me find a moderately priced restaurant that serves North American food? Thanks.

S: Unfortunately, I am unable to locate a moderately priced North American restaurant. I did find an expensive one, would you be interested in that?

U: No. How about Italian food?

S: Sure.  There are five moderately priced italian restaurants.  Would you prefer a certain part of town?

U: Perhaps the center? But I don;t think I have a preference.

S: Pizza Express is a great place that serves moderately priced Italian in the city centre. Would you like me to make you a reservation?

U: Can you tell me if they have delicious lasagna?
S: The reviews are mixed. Some say the food is really good while others think it was just mediocre. Would you like me to find a place with higher ratings?