Formal — to staff
Lost · and · Found · Transportation
You
すみません、〇〇線で傘を忘れてしまったのですが、忘れ物センターはどこですか?
すみません、まるまるせんでかさをわすれてしまったのですが、わすれものセンターはどこですか?
Excuse me, I left my umbrella on the XX line. Where is the lost and found center?
Romaji: Sumimasen, marumaru-sen de kasa o wasurete shimatta no desu ga, wasuremono sentaa wa doko desu ka? / Reply Romaji: Marumaru-sen no wasuremono sentaa wa, misaki-eki ni gozaimasu. Kochira de chizu o o-watashi shimashou ka?
Reply
〇〇線の忘れ物センターは、△△駅にございます。こちらで地図をお渡ししましょうか?
まるまるせんのわすれものセンターは、みさきえきにございます。こちらでちずをおわたししましょうか?
The lost and found center for the XX line is at △△ Station. Shall I give you a map here?
Gesture & etiquette
Point to the ground or make a 'forgetting' gesture, then point generally around while asking 'doko desu ka?'.
Be as specific as possible about the item, train line, time, and direction of travel to help staff locate it more easily. Do not become agitated if the item is not immediately found.