YOU SAID:
Please pick lab coats while your there
INTO JAPANESE
あなたのそこにいる間にラボコートを選んでください
BACK INTO ENGLISH
Choose a lab coat while you're there
INTO JAPANESE
あなたがそこにいる間にラボコートを選択してください
BACK INTO ENGLISH
Choose a lab coat while you're there
That didn't even make that much sense in English.