https://chatbotsmagazine.com/how-i-design-and-build-chatbots-with-vulcan-d24fa26075d9 > Steve SchofieldBlockedUnblockFollowFollowingDec 19A couple of years ago, I wrote an article here for Chatbot Magazine about how I designed chatbots, and inherently “conversations”, using a visual collaboration and white-boarding tool called Mural. > I wrote this article at a time when I was building Facebook Messenger bots, using a node.js application and callbacks to the Messenger platform, alongside integration with API.ai (now Dialogue Flow) for the Natural Language Understanding.