Rasa is a framework to create your own assistants with models based on NLU/NLP technologies. Currently only Rasa Open Source is integrated.
The assistant is configured to be a "remind me to call bot", inspired in the example provided by rasa. The files in this folder are for NLP training of the assistant. Checkout the following resources to get more knowledge about RASA.
If you modify any of the rasa files you will need to retrain the assistant, you can do it with make rasa-train
Disclaimer : All this implementation is just an example and for development purposes. Implementation of an assistant with RASA should be treated as a separate component of the system.