We are developing an ECA (Embodied Communicational Agent) system in Hungarian language. The ECA has to be able to carry out general chat conversations and domain specific discussions as well. The structure of the dialogue graph and the attributes of the graph nodes have to support the success of the conversation: user utterance understanding and responding, as well as repairing the 'non-understandins' situations. In the following sections we are briefly depicting the system and describe its dialogue knowledge base focusing on the different user interfaces we developed for its testing and building
