Generic representation of web services is targeted, in order to generate machine readable specification of business processes that run at each partner organization within the virtual organization (VO). A holistic and formal service specification model is defined that can then be used unambiguously for discovery of business services, i.e. for finding a suitable service available at the VO to perform a given task. Especially, the proposed model, called C3Q, augments the description of service by its behavioral specification. A light extension of the WSDL documents is represented to specify all aspects of C3Q. Finally, a GUI is implemented to assist users with the behavioral description of the VO services.