GeneXus application that interacts with a Chat Assistant

We already know how to interact with GeneXus Enterprise AI, we know its Backoffice and Frontend, and we know how to create assistants and test them, either by editing the prompt, through the Playground, or via API.
Now, let's see an example of how to interact with our assistants from a GeneXus knowledge base. The objective is to interact with our MarketingAssistant so that it returns the formal description of the product indicated by the user.