How to build an FAQ Chatbot with API.AI using Node.js -- and PHP

In Universal Chat, we've implemented a chatbot which can be trained by anyone effortlessly. The logic is simple; just give it your questions and answers, and the bot will reply to any customer who asks something similar. In this paper, I'll show you how we've done it so you can do the same. To start, I've tested many different Machine Learning frameworks out there -- Wit.AI, Microsoft Cognitive services, I had a peek at Luis… for me, it turned out that API.AI was the correct choice. It was totally free with a good response rate, it had a great user interface for development, and it was easy to setup, get started with and expand.