4. The dialog system of claim 3 , wherein the plan script defines a sequence of a combination of the set of atomic dialog activities and a set of triggers for triggering the process engine to execute portions of the process script.
4. The dialog system of claim 3 , wherein the plan script defines a sequence of a combination of the set of atomic dialog activities and a set of triggers for triggering the process engine to execute portions of the process script. 9. The dialog system of claim 4 , wherein the plan script defines activities via tags that include an element for selecting between various activities depending on a newest node included in the dialog move tree.