YOU SAID:

Let's go to the party they will have dogs there

INTO JAPANESE

パーティーに行こうが犬

BACK INTO ENGLISH

Go to a party or dog

INTO JAPANESE

パーティーや犬に行く

BACK INTO ENGLISH

Go to party and dog

INTO JAPANESE

パーティーと犬に行く

BACK INTO ENGLISH

Go to the party with dog

INTO JAPANESE

犬と一緒にパーティーに行く

BACK INTO ENGLISH

Go to a party with a dog

INTO JAPANESE

犬と一緒にパーティーに行く

BACK INTO ENGLISH

Go to a party with a dog