You can do something like,
In stories.md file,
Story: smalltalk.greetings.hello
- smalltalk.greetings.hello
- utter_greetings.hello # Message : Hello
- utter_greetings.help # Message : How can I help you today?
In your custom action file,
def run (...)
dispatcher.utter_message(response_1)
dispatcher.utter_message(response_2)
return [...]