19. A development system for developing a dialog application for an interactive voice response system, and comprising: an application builder configured to process application specification data defining tasks performed by the dialog application, items of information needed for the tasks, and information created by executing the tasks to generate application definition data defining a dialog state machine, recognition grammars, and prompt grammars for the dialog application; a scenario generator configured to process the application definition data to a plurality of example interactions representative of interactions between said dialog application and a user of said dialog application, wherein the plurality of the example interactions includes at least one example of a possible prompt corresponding to each rule of a plurality of rules of the prompt grammars, and at least one example of a possible user response corresponding to each rule of a plurality of rules of the recognition grammars; a scenario editor including graphical user interface components for modifying said example interactions; one or more learning components configured to process the modified example interactions to update the recognition grammars, the prompt grammars, and the state machine; a code generator configured to generate the dialog application from the updated state machine, the updated recognition grammars, and the updated prompt grammars.
19. A development system for developing a dialog application for an interactive voice response system, and comprising: an application builder configured to process application specification data defining tasks performed by the dialog application, items of information needed for the tasks, and information created by executing the tasks to generate application definition data defining a dialog state machine, recognition grammars, and prompt grammars for the dialog application; a scenario generator configured to process the application definition data to a plurality of example interactions representative of interactions between said dialog application and a user of said dialog application, wherein the plurality of the example interactions includes at least one example of a possible prompt corresponding to each rule of a plurality of rules of the prompt grammars, and at least one example of a possible user response corresponding to each rule of a plurality of rules of the recognition grammars; a scenario editor including graphical user interface components for modifying said example interactions; one or more learning components configured to process the modified example interactions to update the recognition grammars, the prompt grammars, and the state machine; a code generator configured to generate the dialog application from the updated state machine, the updated recognition grammars, and the updated prompt grammars. 22. A dialogue application generated by the development system of claim 19 .