It's a dead end is a cutscene in Resident Evil 2. It plays during the Leon A scenario.
Plot
Leon introduce himself to Ada. After that, Leon realize that the shaft is a dead end. He and Ada then saw another way up there. He gave her a boost, which she will go and check the room.
Transcript
Leon S. Kennedy: "Ada? I don't think I've introduced myself yet. My name's Leon. I'm with the RPD."
"It's a dead end."
Ada Wong: "You think we can get upstairs through this shaft? Give me a boost. I'll go and check."
Leon S. Kennedy:「エイダ まだ名前を言ってなかったな 俺はレオン よろしく」
「行き止まりか」
Ada Wong:「ここから 上がれないかしら? 手伝って 行ってみるわ」