Lost black hard-shell suitcase with green luggage tag and a small scratch near a bench in the terminal area of Bismarck airport.

I lost my black hard-shell suitcase while visiting a friend near the Bismarck airport. I last remember having it in the terminal before heading outside, but I might have left it next to a bench. The suitcase has a green luggage tag attached with my contact information. There's also a small scratch on the front from a recent trip, and it contains some sentimental items in it.