What are the options for developing an autoresponder script on marketplaces?

Question

Marketing

We are going to order a script that will process reviews on marketplaces (WB and ozone).
Required features:
- the script should monitor reviews and instantly notify if someone puts 1-3 stars;
- automatic response with templates.
Is it possible to make a recognition algorithm, which is discussed in the review, and send templates for each specific topic?

It is necessary to understand what implementation options are possible in general, what they usually write on, an acceptable cost.
And how to determine the professionalism of the performer, what questions to ask?