xyzzy

Also, at uncontrolled airports to acknowledge friendly chit-chat on the
frequency. I know, it's not supposed to happen but it does

pilot 1: cessna xyz leaving 5 miles out
pilot 2: Joe is that you?
pilot 1: yeah it is, hey jeff
pilot 2: great day to fly, huh?
pilot 1: double click

It's a good way to end those conversations with reasonable brevity and
politeness