At my job I call anyone of my parents' or grandparents' generation "Sir" or "Ma'am".

I refer to a group of women as "Ladies", as in "Would you ladies like to sit here?" A group of men are "Gentlemen." Regardless of ages. A mixed group I refer to as "Folks." "Can I help you folks find something?"

When I'm not at work, it's "guys" and "dudes" and "folks" for just about everyone. But still "Sir" and "Ma'am" for older-than-me. "Thank you, sir." "Excuse me, Ma'am, I think you dropped your wallet."

I don't much care what folks refer to me as. I'm more interested in the tone being used when they say it.