what is the relationship between the two speakers?

M: Where is Jimmy? Why hasn’t he come down for breakfast? Needn’t he go to school today?
W: He’s still in bed in his room.
M: What’s the matter with our dear son?
W: He’s feeling terrible. I think he must have caught a bad cold.
M: Well, we must call the doctor.
W: Yes. Can you remember the doctor’s telephone number’?
M: Yes. It’s 7546 2811.