A little while back, パスケースをなくしてしまいました (pasukēsu o nakushite-shimaimashita, I lost my passcase). That’s the little leather case you use to hold your 定期券 (teikiken, commuter pass) and other such cards.
It took me a few days before I realized that the パスケース was not in my bag. I retraced my steps from the week prior and figured I had left it in front of a ticket machine at the train station.
I called the station and asked if someone had found my パスケース. The 駅員 (ekiin, station attendant) was kind on the phone but said she hadn’t seen it. So, she told me to check their website.