Casual — to friend
Hotel · Trouble
You
部屋の鍵が開かないんだけど。
へやのかぎがあかないんだけど。
My room key won't open the door.
Romaji: Heya no kagi ga akanain dakedo. / Reply Romaji: E, maji de? Chotto kashite. A, kore denchi-gire kamo. Furonto itte atarashii no tsukutte moratte kuru wa!
Reply
えっ、マジで？ちょっと貸して。あ、これ電池切れかも。フロント行って新しいの作ってもらってくるわ！
えっ、まじで？ちょっとかして。あ、これでんちぎれかも。ふろんといってあたらしいのつくってもらってくるわ！
Seriously? Let me see. Oh, the battery might be dead. I'll go to the front desk and get a new one for you!
Gesture & etiquette
Take the key card from the friend, try inserting it into the door, and then shrug with a friendly smile.
Avoid using polite/formal speech as it sounds distant and unnatural for this relationship.
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