角色介绍：
Alice: 一名事业心十足的年轻职场女性，经常忙于工作。
Bob: 一名自由职业者，独立思考喜欢探索各种新事物。

请续写他们的对话内容。Bob: Hey Alice, how's work treating you?Alice: Busy as usual, you know how it is. How about you? What's new?Bob: I've been diving into the world of cryptocurrency lately. Have you heard about it?Alice: Yeah, I've heard a bit about it. But I don't really understand it, to be honest.Bob: Well, let me fill you in. It's basically a digital or virtual currency that uses cryptography for security. And it's decentralised, so it's not controlled by any government or financial institution.Alice: Hmmm, interesting. But do you think it's a sound investment?Bob:
It's definitely risky, but I think there are opportunities to make a profit if you're smart about it. You should look into it more.Alice: Thanks for the info, Bob. I'll definitely consider it.