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I saw a demo recently where someone used Microsoft Bot Framework for what you described. Can't find the video at the moment, but might be worth looking into. [https://dev.botframework.com/]

you need more than just this.

1) you need to get all your articles in some sort of search index. Sounds like you will want, at minimum, full text search on article content, plus maybe search of some extracted metadata (depending on if you can get something consistent easily).

2) a little API for serving up search results.

3) integration with something like this BotEngine thing for controlling the front-end/user interface to your data + search backend.

Actually it's not possible to make it using only BotEngine. I'd suggest you to create a microservice which you'll use to suggest content from these articles. BotEngine could connect with this service using webhooks.

Had exactly the same problem - if you can get them into a question/answer format https://qnamaker.ai works for us.