Calendar Invites message

Is there a way to have an auto reply or message to a user requesting a meeting with another user? Meaning, we would like to filter out the meeting request to a certain individual (Department Head) and send an auto reply or message back to the requester stating they need to contact the secretary first before scheduling a meeting with the Department Head. The secretary does have delegated rights on the Department Heads Calendar to add events.

We want to create kind of like a check point so these meeting invites just don't start to flood the Departments Head Calendar.

We are using Office365 for our email. I do have admin rights to the Exchange admin center. 

Thanks,