Wiktionary
how are you
phr. (context idiomatic English) An informal greeting, not requiring a literal response. Typical responses include:
Wikipedia
How Are You
"How Are You" is the seventh track on the album, Think Visual, released by The Kinks in 1986. It was written by Ray Davies.
Usage examples of "how are you".
My sister needs to be committed, but how are you going to get her to a shrink when the people around her can't even see she's crazy?