Multi-character Chat

The ability to create, effectively, a chat room with a human, and 2 custom characters where the AI’s will read and respond to all messages in turn. An important feature in such a mode would have to be a post order (or batting order for the Americans out there) so that the AI’s don’t end up bouncing off one another endlessly before the human can post. For example:
Human posts
Character 1 posts
Character 2 posts
-repeat-
in this example, character 1 would not be able to post again until after the human as posted.