Thank you for what you have done for me.
Thank you for your help.
Thank you for the gift.
Thank you for giving me a lift.
Thank you for your advice.
A: I have a big favor to ask.
B: What is it?
A: Well, I need to borrow $1,000 for the down payment on a car.
B: OK, I’ll lend you the money but you have to pay it back as soon as you can.
A: I promise I will. Thanks a million.
B: You’re welcome.