How to link OpenAI assistant to manychat flow and Facebook messenger

Hello, I’ve creating an OpenAI personal assistant and I’ve trained it on our company and what I’d like it to do. I currently have a ManyChat flow connected to a Facebook Ad Messenger. My goal is to integrate this personal assistant chat bot to respond to any conversations where the contact is not following the ManyChat flow by sending a custom response and isn’t a quick reply through the automation. How can I accomplish this? Can someone show me with a screenshot of which modules to use and in which order to set them up? You can also email me directly at benjamintalexander123@gmail.com. Thank you.