YOU SAID:

hi how are you today is my friends birthday so we are doing a birthday party if u wanna come?

INTO JAPANESE

こんにちは、今日は友達の誕生日はどうですか。来たいなら誕生日パーティーをしますか？

BACK INTO ENGLISH

Hello, how about your friend's birthday today? Do you have a birthday party if you want to come?

INTO JAPANESE

こんにちは、今日の友達の誕生日はどうですか？来たいのなら誕生日会はありますか？

BACK INTO ENGLISH

Hello, how is your friend's birthday today? Do you have a birthday party if you want to come?

INTO JAPANESE

こんにちは、今日の友達の誕生日はどうですか？来たいのなら誕生日会はありますか？

BACK INTO ENGLISH

Hello, how is your friend's birthday today? Do you have a birthday party if you want to come?