I let you in on a little secret. I have different ways of responding to a “thank you” and, as almost always, I am being deliberate about it.
Sometimes it is “You’re welcome”, sometimes it’s “okay”, “sure”, “pleasure”, “likewise”, or “anytime”.
Anytime is the least frequent, due to what the word entails. To a select few, I say “anytime” all the time. And I mean every single stroke of it.