Hi @juncrendi, thank you for your question!
By default, Rasa Core (the component that predicts the next action and learns from stories) is configured with the TED policy, which is a machine learning algorithm. Mood Bot is very simple and TED might be able to generalize correctly from just those few examples, even though it has never seen this exact dialogue. Once you introduce more intents and actions, and make your bot more complex, you’ll need more stories to train on so that this kind of generalizations still works.