YOU SAID:

im going to a friends house to eat dinner with a cat

INTO JAPANESE

友達の家に猫と一緒に夕食を食べに行きます

BACK INTO ENGLISH

I'm going to a friend's house for dinner with my cat.

INTO JAPANESE

猫と一緒に友達の家に夕食に行きます。

BACK INTO ENGLISH

I'm going to a friend's house for dinner with my cat.