Consider a scenario where rasa asks a user a question, but the user doesn’t answer it or take other actions. I hope rasa can ask the last question again in a minute, or ask the user whether to continue the topic.
There is another way you can achieve this by creating a follow-up custom action which always triggers after all the rasa actions or customising rasa action_listen. In the follow-up action, you can use the DateTime module of Python to trigger questions again after a set interval of time.