YOU SAID:
Hello I like potato yes
INTO JAPANESE
こんにちは私はジャガイモは好きですはい
BACK INTO ENGLISH
Hi yes I like potatoes
INTO JAPANESE
こんにちははい、私はジャガイモが好きです
BACK INTO ENGLISH
Hi yes, I like potatoes
INTO JAPANESE
こんにちははい、私はジャガイモが好きです
BACK INTO ENGLISH
Hi yes, I like potatoes
That didn't even make that much sense in English.