Are these all right?

这些行吗?

Do you like this design?

您喜欢这花样吗?

Any particular color?

要什么颜色的?

Can I get you anything else?

还要买别的什么吗?

Is there anything else I may show you?

还有什么要买的吗?

Is there anything else you’d like to buy?

您还有什么要买的吗?

What can I show you?

您要买什么?

What kind would you like?

您想买什么样的?

How about this one?

这个怎么样?

How’s this one?

这个怎么样?

I could recommend something for you.

我可以向您推荐一种货品。

It’s of good quality.

这是优质品。

It’s the latest fashions，very popular.

这是最新款式，非常流行。