I know some people will try to crucify me for asking such question here, since it's too generic, but ill give it a shot.
So basically what I'm after in trying to find if there any tools exist (simply white papers are welcome too) for creating chatbots based on a plain text corpus, so that questions could be asked about it. That is, there is some textual data (like articles), but there are no question, answer pairs to train a conventional model with, like seq2seq. I understand that there are ways to achieve this by using tools to extract intents,entities from a question and match it with paragraphs, articles (based on indexes and topics), but to my understanding this creates more of a NLP search bot, rather than a chatbot, which provides answers in conversation-like manner.
Thanks in advance.