Based on Facebook Messenger, this plugin runs like an instant messaging system. After setup, which is normally less than 2 mins, the blue badge of Facebook Messenger and the button Message Us on Facebook will appear on your pages. Your customers find it convenient to ask about your products or services. This plugin is sure to help your business with time and cost saving, yet obtain a prompt reply to visitors.

Demo: https://codecanyon.net/item/facebook-messenger-for-wordpress/16392065