Honestly they probably didn’t think much of it so don’t worry about it too much! But generally when someone ends a conversation with a pleasantry like “take care,” it’s good to thank them and return it in kind. You could also say something like “thanks, enjoy your Friday“ or “have a great evening/weekend” (if it’s at the end of the day) etc to demonstrate warmth, care, and reciprocity
My dad teases me about how when I was a little kid, my favorite thing to do when I was on the landline phone with somebody—be it a relative or one of my best friends—was to breathlessly describe the things that were in my bedroom so that they could have a mental picture of everything I loved and chose to surround myself with, and where I sat at that moment in time. Perfectly Imperfect reminds me of that so thanks for always listening and for sharing with me too 💌