Traditionally, they should call you ma'am/sir if it's a passing interaction, otherwise they'd have been introduced to you and be calling you Mrs./Miss/Ms./Mr./Sir/Lady etc. Whomever.

Really? Socially?

So, it seems I have a job interview tomorrow morning at 11. They called me this afternoon. I am more nervous than I thought I would be. I suppose mostly because I really want to work there but I don't want to work 40 hours a week in their office. Im trying to decide if I should bring a writing sample. They didn't ask for one but I think Im a good writer. But I would have to redacted all client info which would take a while. I'm nervous.

A passing interaction would be in a business-like situation. In a social situation, someone would have introduced you, otherwise someone is being very gauche for addressing you without a proper introduction.

Keep in mine that my social manners information is highly influenced by late 19th-early 20th century etiquette manuals. For modern interactions, I'm as lost as everyone else.

They're not asking for my last name for social disambiguation purposes. Either for convention, or for web searching. Neither of which I care about. The most searching I'll do on someone I meet is imdb and that's if they bring up their screen history.

So if it's someone you just met, what should they call you when addressing you?

Depends on the situation. In a social situation, first names are fine. Anything else, I use Mr./Ms.

The industry I was in for a while and that semi-relates to my job now is informal enough that calling someone Mr. or Miss/Mrs/Ms, would be thought rude. Higher ups are usually called by both first and last names and more level coworkers and lower by first only.

I wasn't really talking about business though. I meant someone you've just met, but don't know well socially calling you by your first name. There are even people I haven't met, but who have heard of me (just because people tend to know my husband, but may not have met me yet) who call me by my first name, and I prefer that to Mr. Jane's wife.

They're not asking for my last name for social disambiguation purposes.

I imagine that's true. I never thought of the web searching implications.

Sigh. A job where I interviewed, and where I thought I did really well, has started scheduling people for the second round of interviews, and I did not get asked. I didn't get a rejection, either, though.

People to whom I've not been introduced need not to use my name. This is especially important for supermarket clerks reading it off my credit card. I hates that, I does. My name is something that's extended, not something that's taken.

This is especially annoying when you don't go by your first name. Though it does come in handy for screening calls. If someone asks for J-----, I know they don't really know me/are soliciting.

Sigh. A job where I interviewed, and where I thought I did really well, has started scheduling people for the second round of interviews, and I did not get asked. I didn't get a rejection, either, though.

They may be keeping their options open. Or they may be disorganized. Or they may just be pricks you wouldn't want to work for anyway.