Social Media Chat Support

I want to set up an online customer-service chat that works directly through social media, starting with Facebook. The goal is to give my followers an easy way to reach us and to let my team respond quickly without switching tools.

Here is what I need:
• Integration with Facebook’s messaging API so every incoming customer query appears in one unified admin panel.
• A lightweight admin interface with built-in real-time notifications—each new message should pop up instantly and highlight until an agent handles it.
• Basic agent login and role management so I can add or remove team members later.

Optional but nice to have (please note in your proposal if you can cover any of these): message tagging, searchable chat history, or email fall-back for after-hours inquiries.

Deliverable: a working web-based or desktop admin chat dashboard connected to my Facebook page, fully tested and ready for day-to-day use.