I really thought the way this would shake out is what the end user would own all the assistant chatter and the mistakes it made and businesses would generate easily machine parsable shit for YOUR assistant to parse to make it easy for your agent to both inform you and lessen the friction for the actual sale eg lenovo hp dell etc would provide machine parseible specs and you would conversationally find an item and end up with it in a cart but the last step would be human crafted UI where you would agree to buy exactly what it was you were buying and you were responsible for reading it because THAT not your prior chat with YOUR agent was what they were responsible for.