How to implement an expert system / search engine on node.js with NLP?

Question

Search engines

The task is to make a chat bot - an expert system.
For example, the user writes:
- I have problems sleeping
- how to get rid of sleep problems
- I don't sleep well
The algorithm should understand that the answer "Solving problems with sleep" should be dropped from the database. How to correctly implement such a system?
It is planned to store about 1000 responses.

Answer 1

This is not an easy task.
First, you need to translate the request into a vector using something like
https://www.npmjs.com/package/word2vec
And then, using the resulting vector, find suitable topics in the database.
Google for word2vec...