Taking a guess, based on experiences with using Google Assistant extensively:
What do you do if you have statistics saying that, say, a feature is used by a small fraction of users, and 40% of the activations of the feature were in fact not what the user wants, and instead were misunderstandings of requests for something else?
So ask for clarification. State your interpretation and give an opportunity for the speaker to confirm or clarify. This isn't some new intractible issue, this has always been a fundamental aspect of communication in a natural language.
What do you do if you have statistics saying that, say, a feature is used by a small fraction of users, and 40% of the activations of the feature were in fact not what the user wants, and instead were misunderstandings of requests for something else?
Ambiguity is a massive problem.