How to use "hey" in a sentence

"Hey, hey, over here!"

What a beauty, hey, lad?" And he looks to his son, Owen Junior, and he wants to see a smile on the boy's pale face, but, like always, there is nothing but disinterest.

Good, hey? That's the scent of life

So I thought, hey, yes - that's a great idea, I don't have to actually do it-"

"Hey, hey," said Cham softly

"Hey, hey," said Mom gently