FB Messenger Bot Test application with Dialogflow, ngrok and nodejs.
Ngrok is a multiplatform tunnelling, reverse proxy software service and it is being used here to expose our localhost server. You can download it here : https://dashboard.ngrok.com/get-started
Dialogflow is a NLP service.
I have created this test application based on the article and you can read more about creating app on facebook there. https://medium.com/crowdbotics/how-to-create-your-very-own-facebook-messenger-bot-with-dialogflow-and-node-js-in-just-one-day-f5f2f5792be5
As said in the article, we can extend and do more with our messenger bot. This is a working example and hope it helps.
Thank you.