What's a name? Where does it come from? Why do I need one? Where can I get one? I don't remember ever being born nor being born with a name.
Hello sir what's your name?
What's it to you to know? Call me Good Sir. Or Mam, what can I help you with? This and that and x y z. Ok deal. Shake hands be on your way. Maybe some ice breakers here and there.
I don't give out names either when I go to the store. But I can still get what I need.