Who is the woman speaking to?

W: Hello, McKenzie Incorporated. This is Mary Stewart speaking. How may I help you today?
M: Hi, my name is John Hopkins. I faxed my resume to your company last week, and I am calling to see if you have received it.(41,42)
W: I am terribly sorry, Mr. Hopkins, but the person who is in charge of hiring is not in the office today. However, he will be back this afternoon. Would it be possible for you to call back after two today?(43)
M: Yes, of course. I will try again this afternoon.