Student does not understand CC/reply-all?

This is a new one for me. Student emails me for help enrolling in a class. I reply telling student what info we need to do that, CC the admin assistant who is the person who can fix the issue, and say “I’m CCing X here, please reply to us both with the info”. Student replies only to me with another question. I reply to student, again CCing our admin, and say “make sure you include X in you reply so they can help you”. Student then replies again just to me saying “could you give me X’s email?”

Do we really have students now who do not understand the basics of how email works??