The diagram above depicts ARGUER during a turn-taking process. The system has access to the Domain Knowledge Base (KB), Argumentation Knowledge Base and the Commonsense Knowledge Base. The system is presumed to be the domain expert and has access to the user's belief models (because it is the system's models of the user).

User's Turn. The system will attempt to interpret the user's utterance as an attack or support on a prior utterance of the system. It does so by asking, What does the user's utterance attack? and second, What does the user's utterance support? All reasoning to answer these questions occurs in the user's belief model and makes use of all the knowledge sources therein.

System's Turn. The system will attempt to attack or support the previous utterances of the user. In addition to the knowledge sources it has access to, the reasoning also takes into consideration the system's model of the user (user model).