More and more over the last decade, as institutions allow people to book time in other people's calendars, there has been the presumption that "free" means "available".
NO.
NO.
NO.
Free means "ask me if I have time for you". Preemptive booking without consultation leads more and more to me hitting "Decline". When it comes to time, the verb should not be mine but, rather, theirs. They should ASK. I should not have to DECLINE just to begin the conversation.