Who most likely is the woman?

Câu hỏi :

Question 30 - 32 refer to following paragraph:

M: Hello. My name is Robert Marin. I am here to pick up my medication for my stomach.
W: Okay, your order has already arrived, 30 minutes after you have eaten, three times a day, in the morning, afternoon and evening. Be sure to take the recommended dosage.
M: Is there any drowsiness or tiredness associated with the medicine? I have to drive to another city in the evening.
W: Your medication has no evident side effects, so you don’t need to worry about that. Here you are.
30. Who most likely is the woman?