you are welcome

you are welcome

You are under no obligation for the courtesy or favor for which you are thanking me. (Used as a standard and polite response to "thank you.") A: "Thank you again for helping me with all this." B: "Oh, you're welcome, it was really no trouble." A: "I've been meaning to say thank you for your generous gift." B: "Aw, that's sweet of you. You are very welcome."
See also: welcome

you're welcome

A response to "thank you" or "thanks" meaning that one was glad to do it and would do it again. A: "Thanks for picking up that package for me." B: "Oh, you're welcome."
See also: welcome
Farlex Dictionary of Idioms.

You are welcome.

 and You're welcome.
a polite response to Thank you. "Thank you for helping me." "You're welcome." "Thank you very much!" "You are welcome!"
See also: welcome
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

you're welcome

Also, don't mention it. No thanks are needed, I was glad to do it. For example, Thanks for picking me up.-You're welcome, or I appreciate what you did for Mother.-Don't mention it. Both phrases are polite formulas for responding to thanks. The first dates from about 1900; the variant was first recorded in 1841. For synonyms, see forget it; no problem, def. 2. Also see welcome to.
See also: welcome
The American Heritage® Dictionary of Idioms by Christine Ammer.

you’re ˈwelcome

(especially American English) used as a polite reply when a person thanks you: ‘Thanks for your help.’ ‘You’re welcome.’
See also: welcome
Farlex Partner Idioms Dictionary
See also:
  • you're welcome
  • do (one) the courtesy of (doing something)
  • do somebody the courtesy of doing something
  • have the courtesy to (do something)
  • have the courtesy to do something
  • beholden to (someone)
  • courtesy of (someone or something)
  • courtesy of somebody/something
  • make a virtue of necessity
  • make a virtue of necessity, to