Controls an IntentDialogs processing of the users text utterances.
Process text utterances whenever the dialog is first loaded through a call to session.beginDialog() and anytime a reply from the user is received. This was the default behaviour prior to version 3.2.
Processes text utterances anytime a reply is received but only when the dialog is first loaded if it's the root dialog. This is the default behaviour as of 3.2.
Only process text utterances when a reply is received.