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The Interaction model is the collection of intents, slots, and synonyms that are created in the Experience Designer and deployed to Google or Alexa. The Interaction model is project-specific and you can view the Interaction model of a project at Project side navigation menu > Develop > Deployment > Alexa tab. The interaction model is the same for Alexa and Google deployment.
Refer, How to deploy Publish the interaction model to Dialogflow?
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Refer, Chatbot Settings for more information.
Default Intent nodes
The help, cancel, and stop intent nodes are available on the Experience Designer canvas by default with their respective say nodes. When the help, cancel, or stop are used in the Flow studio (Single input, Choose one, Choose many controls) and when there is no other intent node with the flow studio state (or any other state) that captures these default intents' utterances, the default intent nodes will get triggered and the corresponding say node response will be given to the chatbot user. This will break the flow as these say nodes have no state.
If you want to use these default intents utterances within flow studio and do not want to break the flow, then connect these default intent nodes with appropriate state mentioned and connect to flow manager node.
Supporting Documentation
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