8. A system comprising: a processor; and a computer-readable storage device having instructions stored which, when executed by the processor, cause the processor to perform operations comprising: selecting a top level recursive flow controller from a database, wherein the top level recursive flow controller isolates subdialog information of each subdialog in a plurality of subdialogs from other subdialogs in the plurality of subdialogs; selecting, for a portion of an application below the top level recursive flow controller, an available reusable subdialog; and developing, for a spoken dialog service, a subdialog for each remaining portion of the application not associated with the available reusable subdialog.
12. The system of claim 8 , wherein the available reusable subdialog and a developed subdialog manage mixed-initiative conversations with a user.