YOU SAID:
bye have a great time
INTO JAPANESE
さようならは、素晴らしい時間を過ごす
BACK INTO ENGLISH
Goodbye if you spend a great time
INTO JAPANESE
さよならあなたは素晴らしい時間を過ごすなら
BACK INTO ENGLISH
If you say goodbye you have a great time
INTO JAPANESE
素晴らしい時間がある場合はさよならを言う
BACK INTO ENGLISH
If you have a great time to say goodbye
INTO JAPANESE
さよならを言う素晴らしい時間を持っている場合
BACK INTO ENGLISH
If you have a great time to say goodbye
That didn't even make that much sense in English.