This tutorial shows how to call OpenAI models from FANTASIA. While you can use these for dialogue management, my recommendation is to use Generative AI for Natural Language Generation only, keeping decision making processes separated. I will post a dedicated video about this but you can also refer to my interview on the Neo4j channel
https://www.youtube.com/watch?v=0r4fwxd5tKU&ab_channel=Neo4j