YOU SAID:
Hello I am a very cool person
INTO JAPANESE
こんにちは私は非常にクールな人
BACK INTO ENGLISH
Hi I'm a cool person
INTO JAPANESE
こんにちは、私はクールな人
BACK INTO ENGLISH
Hi, I was a cool person
INTO JAPANESE
こんにちは、私はクールな人がいた
BACK INTO ENGLISH
Hi, I had a cool person
INTO JAPANESE
こんにちは、私はクールな人がいた
BACK INTO ENGLISH
Hi, I had a cool person
Okay, I get it, you like Translation Party.