頼み事をするとき
Could you do me a favor?
お願いがあるんだけど・・・
May I ask you a favor?
(Name,) I have a favor to ask you.
Julie, I have a big favor to ask.

I'd like you to pick them up.
あなたに〓して欲しい。

I'd like to pick them up.
私は〓したい。