YOU SAID:

hello my good friend john

INTO JAPANESE

親友のジョンさん、こんにちは

BACK INTO ENGLISH

Hi, my best friend John.

INTO JAPANESE

やあ親友のジョン

BACK INTO ENGLISH

Hi, my best friend, John.

INTO JAPANESE

親友のジョン

BACK INTO ENGLISH

My best friend, John.

INTO JAPANESE

一番の友達だ

BACK INTO ENGLISH

My best friend.

INTO JAPANESE

一番の友達だ

BACK INTO ENGLISH

My best friend.