What are the speakers mainly discussing?

M I found that file you were looking for.
W You found the Whitman file? I searched my entire office yesterday for it. I was so worried. I couldn’t sleep all night thinking about it. Where was it?
M It was next to the copier on the third floor. I guess you left it there.
W I completely forgot. I went there to make copies because the copier on our floor isn’t working. Thank you so much, I feel so relieved. Mr. Adams was asking me about it this morning, and I didn’t know what to say.