Integrate a PHP- Chat in my website

Avg Bid (INR)
Project Budget (INR)
₹1500 - ₹12500

Project Description:
I have a website ready and i want to integrate any PHP chat (must be 1-1 user) in it.
My website has login and sign-up features already. All pages are already built in PHP, HTML and CSS.

1. Website in P.H.P already exists, database MySQL exists, minor changes might be needed.
2. I just want people in the website to have 1-1 chat with the online experts. Not a chat-room.
3. Also customer has to pay for this chat via credit/debit/PayPal for the session.
4. Online experts needs to be fetched from DB and shown 10 per page with chat now option.

Requirement Document is attached. I will give the sample website like whose I want it :

Lower amount bids will be given preference. Definitely not more than 3k.
You have to make all the requirements work properly for payments.

Skills required:
Additional Files: Requirements.doc
About the employer:
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