YOU SAID:
Hello person I've never met!!!
INTO JAPANESE
こんにちは、私は会ったことがない人
BACK INTO ENGLISH
Hello, I am the one who has never met
INTO JAPANESE
こんにちは、私は一度も会ったことのない人です
BACK INTO ENGLISH
Hello, I have never met a person
INTO JAPANESE
こんにちは、私は人に会ったことがない
BACK INTO ENGLISH
Hello, I have never met a person
Come on, you can do better than that.