(it is) (one's) pleasure

(it is) (one's) pleasure

One was glad to do it and would do it again. A response to "thank you." A: "Thanks for picking up that package for me." B: "Oh, it was my pleasure. Happy I could help." A: "Thank you so much for helping my children, officer." B: "My pleasure, ma'am."
See also: pleasure
Farlex Dictionary of Idioms.

My pleasure.

 
1. You're welcome.; It is my pleasure to do so. (From It's my pleasure. There is a stress on both words.) Mary: Thank you for bringing this up here. Bill: My pleasure. Jane: Oh, Doctor, you've really helped Tom. Thank you so much! Doctor: My pleasure.
2. Happy to meet you.; Happy to see you. Sally: Bill, meet Mary, my cousin. Bill: My pleasure.
See also: pleasure
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

my pleasure

Used to acknowledge an expression of gratitude.
See also: pleasure
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • at (one's) pleasure
  • at your/somebody's pleasure
  • have had the pleasure
  • lady of pleasure
  • live for the moment
  • likewise
  • Likewise, I'm sure.
  • be here for (something)
  • life in the fast lane
  • knight of the road