YOU SAID:

I am going to use my girlfriend and fly to paris

INTO JAPANESE

私はガールフレンドを使ってパリに飛ぶ予定です

BACK INTO ENGLISH

I will fly to Paris with my girlfriend

INTO JAPANESE

私はガールフレンドと共にパリに飛ぶ予定です

BACK INTO ENGLISH

I will fly to Paris with my girlfriend