You say Nothing, Im blind, and watch them run away.
pleasure
Your welcome is used after you are thanked by someone and there is no after speech after it.
Starring role means just like a play or a movie that someone is in
Tell them it's ok
I'm good. how are you doing?
You should tell her and see what she says if she says no to going out with you then she does not deserve you. Best of luck!
interpreter
you should say im doing fine* how about you *only if you are doing fine
You should say "Thank you" when someone says this to you.
No, of course not! You should totally go for it!
You should reply "and the balance of the day to you."
You should say NOTHING AT ALL and change the topic