U: am looking for a restaurant. The restaurant should be in the west and should be in the cheap price range

S: I have two choices in that area and price range.  Would you prefer Italian or Vietnamese?

U: I would prefer Vietnamese.

S: Thanh Binh is a cheap Vietnamese restaurant in the west. Shall I book a reservation for you?

U: Do they serve good portions of food here?
S: Thanh Binh has really good sized proportions according to the reviews I was able to find.  Would you like to make a reservation?