Who is the man speaking to?

W: Good afternoon,Dr. Anderson’s office.
M:Hello,my name is John. I am hoping I could come in today to see the doctor.
W: Are you a patient of Dr. Anderson?
M:Well,no. I’m in town at a convention and the manager of the hotel where I’m staying suggested that I call you.
W: What seems to be the problem?
M:Well,I got this ringing in my ears.
W: Are you in any pain or is there any discharge?
M:No discharge,just a slight earache.
W: The doctor will be busy at the hospital until this evening. The earliest you could see him would be tomorrow morning at ten.
M:I’ll come in then if that’s okay.
W: That will be fine,in the meantime you should try to take it easy.