A dialogue between a doctor and a patient
    Patient: Hello doctor! Can you spare me a few minutes?
    Doctor: Certainly! Come in and sit down. Now, what is the matter with you?
    Patient: That is just what I want you to tell me.
    Doctor: Well, tell me how you are suffering?
    Patient: I seem to be generally out of sorts. I have no appetite for my food, and yet I am always suffering from indifestion.
    Doctor: Are you troubled with headaches?
    Patient: Yes, I am. And what is worse, I cannot sleep at night.
    Doctor: I see, what is your work?
    Patient: I am a clerk in an office and have to work long hours.
    Doctor: What sort of exercise do you take in the evening?
    Patient: I am afraid I don't take any. I feel so tired when I get home that I simply want to sit down, or go to bed.
    Doctor: I see. Well, you are evidently run down, and need a rest and change. All your troubles are signs of nervous exhaustion. I will give you a nerve tonic but the main thing is rest. If you do as I say, you will soon be all right.
    Patient: Thank you, doctor. I will follow your advice, good night!
    Doctor: Good night! And let me know how you get on.