以下是一段关于钢笔的英语对话：

A: Hey, have you seen my钢笔 anywhere? I can't find it.

B: Hmm, I think I saw it on your desk yesterday. Did you check there?

A: Yes, I looked there but it's not there. I'm starting to get worried because it was a gift from my grandpa.

B: Don't worry, we'll find it. Do you remember the last time you used it?

A: I think I used it in the library yesterday afternoon. I was taking notes for my history class.

B: Okay, let's go check the library. Maybe someone turned it in to the lost and found.

A: That's a good idea. Thanks for helping me look for it.

B: No problem. Let's go.

希望这个对话对你有所帮助！