you still sound american

A Short Dialogue That Has Been Rather Loosely Paraphrased:

Me (American) to C (another American): Did you have a lovely dinner?

C: Woah, that just sounded so British!

M (a British person): No, that did not. That was so American. If you were British you would have asked "How was dinner?" and then the other person would have answered, "Oh, it was lovely."

L (another British person): Agreed. That sounded so American.