Neo4j, Graph, Llm, Langchain, ChatGPT.
Optional[str] = None) -> str: """ Recommends movies based on user's history and preference for a specific movie and/or genre. Returns: str: A string containing a list of recommended movies, or an error message. """ user_id = get_user_id() params = {"user_id": user_id, "genre": genre} if not movie