YOU SAID:

I am going to go to Fright Fest with my sister

INTO JAPANESE

妹と一緒にFright Festに行くつもりです

BACK INTO ENGLISH

I'm going to Fright Fest with my sister.

INTO JAPANESE

妹と一緒にFright Festに行きます。

BACK INTO ENGLISH

I'm going to Fright Fest with my sister.