Meaning/Usage: Happy to do something for someone

Explanation: "Pleasure" is to feel happy. When you use this term, you are telling the other person that you are happy to do it.

"It is my pleasure to introduce you to our guests."
"It was my pleasure to work with you."
"It is my pleasure to be involved in something so important."

A. "I really appreciate all you did helping me finish my project."
B. "No problem at all, it was my pleasure."

Other Common Sentences

"Don't mention it."
"No problem."