U: I'm looking for an expensive restaurant in the north area

S: I have moderate and expensive priced restaurants. City stop restaurant serves european and is on the expensive side. Or may I suggest saigon city, they have asian?

U: Do any of them specialize in chinese?

S: Yes, both Hakka and The Hotpot serve Chinese.  Can I book either for you?

U: Does the restaurant offer large food portions?
S: The Hakka restaurant serves food that's both delicious and large, while those dining at the Hotpot enjoyed their sizable portions as well.