YOU SAID:
watashi wa kawaidesu ka
INTO JAPANESE
私は kawaidesu ka
BACK INTO ENGLISH
My name is kawaidesu ka
INTO JAPANESE
私の名前は kawaidesu ka です。
BACK INTO ENGLISH
My name is kawaidesu ka.
INTO JAPANESE
私の名前は、kawaidesu ka です。
BACK INTO ENGLISH
My name is kawaidesu ka.
Come on, you can do better than that.