ขอความช่วยเหลือและขอยืมของ

Could you do me a favor?

Could you do me a favor? I need a hand with this.

Can I borrow your...?

Can I borrow your charger for a bit?

I owe you one

Thanks a lot, I owe you one.

Sure, no problem at all

Can you help me move this? — Sure, no problem at all.