It seems there is no way to get the bot starting a conversation with utter…right?
Unfortunately modifying action_session_start also failed to dispatch messages when I tried it (from this post 6d ago How can bot start conversation after action_session_start? )
I really can’t see how to apply your solution to start with “utter_registration_request” with rasa open source.
Do I need rasa x? Sorry to abuse your patience …