YOU SAID:
You must go to Japan to sell your wares on the next available flight!
INTO JAPANESE
次の利用できる飛行で用品を販売する日本に行く必要があります!
BACK INTO ENGLISH
You need to go to Japan to sell the goods on the next available flight!
INTO JAPANESE
次の利用できる飛行で商品を販売する日本に行く必要があります!
BACK INTO ENGLISH
You need to go to Japan to sell the goods on the next available flight!
That didn't even make that much sense in English.