I'd like to talk to Mr Smith. "This is Smith speaking."
Keep an eye on the baby while I am away.
I'm sorry to bother you, but I would like to ask you a favor.
Would you please do me a favor?
I am sorry I have imposed so much on you.
I'd like you to look after my dog during my absence.
Do you think your mom could set me up, too?
May I ask a very special favor of you?
I have just one more thing to ask of you - Get Lost.