Yes. Every "natural language" system, whether it's a text chatbot or Siri-style voice bot, is essentially a command-line interface without very good documentat

Yes. Every "natural language" system, whether it's a text chatbot or Siri-style voice bot, is essentially a command-line interface without very good documentation. In general, it was considered an advancement over the classic CLI (at least for environments where there's low expected user proficiency) to provide a menu of valid choices and put them front and centre. Most customer service scenarios are exactly that-- low user proficiency (in company- or business-specific terminology, or sometimes even the very transaction flow itself) so they may not be able to quite enunciate exactly what they mean, but can easily pick from a clearly written menu.