intended as a greeting, it approaches a yell- but holds back. A long, drawnout greeting. Also, what would be a mircrophone check when an artist comes on stage.
Hedayati are a clan out of the oldest city in the world Hekmataneh currently called Hamedan out of old Persia now called Iran.
They are known for their smarts, leadership skills, kind heartedness, good will, and high education. Good looking and intelligent is an easy way to hope that you have ran in to a Hedayati.
That guy is so well mannered and articulate, he may be a Hedayati.