do a favor

Once on the ground, however, she sold the idea to Begin, who told Sadat: “Let’s do a favor for our friend Barbara.”

She came down in an almost-transparent negligee and told the men as they put on their coats: “Do the right thing, do a favor for me — whatever you gave, now double it.”

So far he has just been a bosom companion, giving Durin warm praise and sound advice … to make him more inclined to do a favor, eventually.

“I need to do a favor for Mr. Patterson,” I said.

But to earn that favor, Cha-Cha would have to do a favor for Duke first.