What’ s the probable relationship between the two speakers?

W: Need I take some medicine?
M: Yes. And I strongly advise you to go on a low-fat diet.
W: Do you really think that’s really important?
M: Of course. If you don’ t, you might have a heart attack some day.
W: Well, I think I should follow your advice. You have been very helpful. Thanks.

M: Jim needs to find another place to live.
W: What’s wrong?
M: The apartment he rents now has been sold to a new owner.
W: He’ d better start looking right away. When all the students come back in a few weeks, he won’ t find any near the campus.