Allow multiagents to chat with each other.

[ghost]

I would like two agents with different roles to chat with each other. However the test fails. Two or more agents can get better result according to this URL: https://www.youtube.com/watch?v=ZYf9V2fSFwU

For example:

sgpt --role cn 'how are you?' | sgpt --role checker
This is just an test case. cn is a translator from English to Chinese. Checker is Chinese Language checker.

However, the result is that "I'm here to help with translations. Just type or paste the text you'd like me to translate, and I'll take care of the rest!".