YOU SAID:

I'm going to eat dinner with my sister

INTO JAPANESE

私は姉と夕食を食べるつもりです

BACK INTO ENGLISH

I am going to have dinner with my sister

INTO JAPANESE

私は姉と夕食をとるつもりです

BACK INTO ENGLISH

I will have dinner with my sister

INTO JAPANESE

私は姉と夕食をとります

BACK INTO ENGLISH

I have dinner with my sister

INTO JAPANESE

私は姉と夕食をとります

BACK INTO ENGLISH

I have dinner with my sister