Interaction with web service enabled marketplaces would be greatly facilitated if users were given a high level service request language to express their goals in complex business domains. This could be achieved by using a planning frame-work which monitors the execution of planned goals against predefined standard business processes and interacts with the user to achieve goal satisfaction. The thesis addresses the problem of service composition executions man-aged by interacting with the client. The planning architecture accepts high level requests, expressed in XSRL (XML Service Request Language). The plan-ning framework is based on the principle of interleaving planning and exe-cution. This is accomplished on the basis of refinement and revision as new service-related information is gathered from service registries and web services instances, and as execution circumstances necessitate change. The system in-teracts with the user whenever confirmation or verification is needed. The work is primarily concerned with the problems of composition and mon
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