Formal — to staff
Train · Station · Lost · Found
You
昨日、〇〇線で黒い傘を忘れてしまったのですが、届いていませんか？
きのう、まるまるせんでくろいかさをわすれてしまったのですが、とどいていませんか？
I left a black umbrella on the 〇〇 line yesterday. Has it been turned in?
Romaji: Kinō, marumaru-sen de kuroi kasa o wasurete shimatta no desu ga, todoite imasen ka? / Reply Romaji: O-wasuremono desu ne. Tokuchō o kuwashiku oshiete itadakemasu ka?
Reply
お忘れ物ですね。特徴を詳しく教えていただけますか？
おわすれものですね。とくちょうをくわしくおしえていただけますか？
A lost item, is it? Could you please tell me more about its characteristics?
Gesture & etiquette
Slightly bow, show frustration/concern (but politely).
Be as specific as possible about the item, time, and location to increase chances of retrieval. Replace 〇〇 with the actual train line name.
#lost and found#train#station#umbrella#wasuremono#JR