Message handling method, message handling apparatus, and memory media for storing a message handling apparatus controlling program

1. Field of the Invention A communication system is provided which, upon communication, is capable of making a suitable response by using interpretation execution parts which conform to the background concepts and vocabularies of a conversation. A flexible and smooth information exchange and cooperation are realized among, and between, agents and an existing system by dynamically allocating suitable interpretation execution parts which include an interpreter in conformance to a variety of agent communication languages, content describing languages and ontologies. The agent communication system in a preferred embodiment of this invention is provided with an interpretation execution part control function that scans a directory of interpretation parts such as conversation content monitoring parts, interpreters and translators, upon the time of execution start or during execution, and forms and maintains an interpretation execution part table that defines what interpretation execution parts exist.