U: Hi, can you help me find an expensive russian restaurant?

S: I am sorry I looked up your criteria and I do not see any expensive russian restaurants in my data base

U: Are you looking in the centre area?

S: Yes, I apologize but no restaurants match your search.

U: How about british food instead?

S: I have 3 British restaurants that fit your criteria.  I would personally recommend Fitzbillies Restaurant.

U: Do they serve large portion sizes?
S: One person said that the portion sizes were very large such that they could share. Another person thought the portions were too small.