As long as you ask politely, most people do not mind repeating something you didn’t hear or understand.

1.A: I’m sorry, but I didn’t catch what you said.

B: I said, "Do you want me to help you?"

A: If you’re sure you’re not in a hurry, I can use a lttle help.

B: Would you like me to get you a cab?

2.A: I beg your pardon?

B: I said, "Do you need any help?"

A: That’s very nice of you. I guess I could use some help.

B: Just tell me what you’d like me to do.

3.A: What was that?

B: I said, "Is there anything I can do?"

A: If it’s not too much trouble, I would like some help.

B: It’s no trouble at all. I’ll carry this suitcase for you.

4.A: Excuse me? I didn’t hear what you said.

B: I asked you if you wanted some help.

A: If you wouldn’t mind, I could use a hand.

B: I’ll get this bag for you.