TOEIC ETS

M: Hi Dolores, I know we were supposed to review applications for a medical assistant today, but I'm still working on my presentation for the international surgeons' conference next week. W: No problem. I've presented at that conference before. You'll need to be prepared. W: So... should we reschedule for next week? W: Actually, why don't we just postpone hiring someone until next month? M: That would work better for me. But don't we need someone sooner? W: No. Jerome just told me he could stay until we find his replacement.

What field do the speakers most likely work in?