U: Can you direct me to a Catalan restaurant that is moderately priced please?

S: Unfortunately, I do not happen to have anything serving catalan food that is moderately priced. Would you like me to check a different cuisine type or price range?

U: yes how about a moderate mexican restaurant?

S: Sorry, but there are no mexican restaurants in the price range either. Would you like to try a different type of restaurant?

U: Italian would work just as good.

S: Italian is a wonderful choice. There is a pizza express in centre, would you like to make a reservation?

U: As long as they are rated highly and have big portions, go right ahead.
S: The Pizza Express gets some mixed reviews on the portions. It's split down the middle with some saying the portions were generous while the others found them lacking. Is there anything else you'd like to know about them?