Please answer the following question: W: Oh, Mike. This is Amy. My goodness! I've got hold of you, at last.  M: Nice to hear from you again after all these years. What have you been doing?  W: Well, I've tried many things since school. I'm now working for a food processing company in charge of sales. So I travel a lot.  M: Oh, that's great. You must really enjoy it.  W: Oh, I do. Yeah, it's interesting, but it's quite tiring. But, What about you, Mike?  M: I work in a law firm, practicing in business law.  W: Oh, that's challenging.  M: Yeah, but I like my job.  What was said before this conversation?
A:
M: Hello. This is Mike. Who is it, please?