United Airlines to Ban Personal AI Agents from Booking Tickets for Customers. According to the Wall Street Journal, United Airlines announced Wednesday that it will block personal AI assistants from accessing its systems to book tickets for users. The company stated that it is concerned such automated agents could leak sensitive customer information or make unauthorized purchases, potentially violating regulations of the Federal Aviation Administration (FAA) and the Department of Transportation (DOT). United Airlines also stated that it does not want to add another "middleman."