YOU SAID:
I will eat dinner with my sister
INTO JAPANESE
私は妹と夕食を食べます
BACK INTO ENGLISH
I'm having dinner with my sister.
INTO JAPANESE
私は妹と夕食をとっている。
BACK INTO ENGLISH
I am having dinner with my sister.
INTO JAPANESE
私は妹と夕食をとっている。
BACK INTO ENGLISH
I am having dinner with my sister.
You should move to Japan!