In this article the authors "designed an automated system for answering logistical questions in online course discussion boards, third party applications or educational platforms and highlighted how it can aid in the development of virtual teaching assistants." What I like was that it described a set-up that accesses services outside the institutional LMS. "VirtualTA can be integrated with third-party applications to enable access from a variety of intermediaries, such as web-based systems, agent-based bots (such as Microsoft Skype and Facebook Messenger), smartphone applications (such as smart assistants), and automated web workflows (e.g., IFTTT, MS Flow)." That's the way to do it, though it's still complex.
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