User / membership Plugin [closed]

I don’t know a plugin like this. But, my personal solution for this project would be like this :

• create a custom post type for agents
• create users role for agents (and users if you want)
• attach a custom field to users to store the assigned agent (maybe with Advanced custom fields plugin)

Create a page to show the chat or whatever. You need to add some specific code to query the data from custom post types from database.

Something like this.

Do you need more infos?