YOU SAID:
Hello, how you doing today?
INTO JAPANESE
こんにちは、ジョン 今日調子はどう?
BACK INTO ENGLISH
Hello, John. How're you doing today?
INTO JAPANESE
こんにちは、ジョン 今日調子はどう?
BACK INTO ENGLISH
Hello, John. How're you doing today?
That didn't even make that much sense in English.