Would he care to do a small favour for me?

It's only a small favor, but most important to me.

Maybe Tom could help you to complete that small favor of mine.

"Well, perhaps there is a small favor you could do for me."

I should thank God for small favors, and get out of there while the getting was good.

Please do me this one small favor; I don't think it's too much to ask.

Just a small favor to cover when I'm double committed.

But she held her breath instead and asked God for this one small favor.

I've been very frank with you, and it seems a small favor to ask in return.

"I wonder if you would consider doing me a small favor."