We introduced robot technology (RT) Ontology for human-robot interactive space design. In this interactive space, the robot provides appropriate services to the user according to situations. For this purpose, we defined "Main task" as a task which user requests to the robot, and "Tsuide task (Accompanied task)" as an essential task accompanied with the "Main task" to complete it in our system. We focus on the development of the system for identifying and defining "Tsuide task" that is set from the intention of user and main tasks by referring RT Ontology. RT Ontology is an infrastructure technology for structuring space information. Our system acquires relationship information from RT Ontology, and set "Tsuide task" in the "Tsuide task" Service Framework. The availability of the proposed framework was confirmed through experiments of five cases. In this paper, we describe the structure and process of "Tsuide task" Service Framework which we have constructed for identifying and defining "Tsuide task".