YOU SAID:
hello my name luke i very cool
INTO JAPANESE
こんにちは私の名前luke私はとてもクール
BACK INTO ENGLISH
Hi my name luke i am so cool
INTO JAPANESE
こんにちは私の名前luke私はとてもクールです
BACK INTO ENGLISH
Hi my name luke i am so cool
That didn't even make that much sense in English.