Xinyu Wu

Thanks @tbscode. I have tried Conversation Agent as well. I find it sometimes return message that cannot be parsed by [this function](https://github.com/hwchase17/langchain/blob/master/langchain/agents/conversational/base.py#L79), meaning the response doesn't follow this format `r"Action:...

Thanks! I end up overriding `_extract_tool_and_input ` too