A language processor includes a parser, an invoker, and an extractor. The parser parses a spoken statement to detect a plurality of words in the spoken statement and generates a parse tree based on the detected plurality of words. The invoker determines, based on the parse tree, a plurality of potential services to invoke to respond to the spoken statement. The extractor determines, for each potential service of the plurality of potential services, a parameter used during execution of that potential service and a value of the determined parameter based on the parse tree. The invoker is further configured to issue a command to invoke a potential service of the plurality of potential services using a value of a determined parameter.