1, you're welcome, this is all I should do.
That's very kind of you. Thank you for your affirmation.
Nothing, nothing, this is my duty.
You're welcome, thank you for your concern.
You're welcome. It's my pleasure.
That's very kind of you. Just a little effort.
You're welcome. I'm always ready to help.
8. Be polite. I have to ask you for help in the future.