Why do you like it? (2)

It's a different size

Woman: May we have another lamp?
Assistant: Yes, of course, madam. But why?
Woman: Because this one doesn't work.
Man: Would you please give us one which works?
Assistant: Certainly, sir. Just one momrnt, please. Here you are.
Woman: That's not the same. It's a different size.
Man: This one's a different colour.
Woman: May we have one which is the same size and the same colour?
Assistant: This is the right one. These lamps are the same.
Woman: Thank you very much.

The same/different

These lamps are | the same/different.
May we have one which is the same size and the same colour?

Give / show us

Give/Show| me/us/him/her| the lamp/a lamp which works.