You can download the complete source code for the dialogue system. In addition, there is a precompiled version tested under Windows 2000. Please take a moment to read the license agreement.
 
 
Acknowledgements:
 
The source code of the dialogue system is distributed with the following open source software components:
  1. The PHOENIX parser written by Wayne Ward.
  2. The SpiderMonkey JavaScript engine. More information on JavaScript and how the SpiderMonkey engine can be found here.