Sergey G.: Please, sit down; I see you are feeling faint. What's wrong?
Anna: I have a fever and my whole body aches.
Sergey G.: You probably have the flu. Any other symptoms?
Anna: I have a terrible headache!
Sergey G.: You might have a virus... One last question, what did you do last night?
Anna: I think I partied too much… I will just drink a lot of liquids and rest.