Translation of "Huan" in Chinese

Hello! I'm Huan.

你好！我是胡安。

Hello, I'm Huan.

你好，我是胡安。

He is called Huan, we are colleagues.

他叫胡安，我們是同事。

Huan, she is Xiaoyu, Xiaoyu and I are classmates.

胡安，她是小雨，我和小雨是同學。

Huan, he is called Linfeng, Linfeng and I are friends.

胡安，他叫林峰，我和林峰是朋友。