pleasure
You should reply "and the balance of the day to you."
"I am well, and you?"
i don't care. you shouldn't of slept with my wife. you git.
if you mean in french , when it means thank you, then i would type "no problem" or "its okay" into a word translator on the internetMerci in French is "thank you" "De rien" is one reply that means you are welcome or you can use "pas de quoi".
We should also reply how do you do as a responce.
If someone you loves says I love you, you reply as I love you too...! but if its someone else...you should let the person know about what you feel about him/her.. p
When someone says "thank you" to you, you should reply by saying : "You're welcome"
"Merçi!"
When some says "wassup" you would reply as if someone asked you " what's up."
and the rest of the day to you
A smile and a heartfelt "Thank you".