YOU SAID:
hello there person who i do not know!
INTO JAPANESE
こんにちは、私が知らない人!
BACK INTO ENGLISH
Hello, people I do not know!
INTO JAPANESE
こんにちは、知らない人!
BACK INTO ENGLISH
Hello, stranger!
INTO JAPANESE
やあ、見ない顔だな!
BACK INTO ENGLISH
Hello, stranger!
That didn't even make that much sense in English.