My pup knows that when I say “thank you” in a certain tone of voice that it’s nearing the end of a meeting. She’ll wait patiently the whole time until I say it,

My pup knows that when I say “thank you” in a certain tone of voice that it’s nearing the end of a meeting. She’ll wait patiently the whole time until I say it, then perk up. And she gets annoyed when anything prolongs the meeting after that signal, and start getting restless because she knows the meeting should be over.