Linguaphone 23.2.4 advice

Advice
Doctor: Simon’s caught a cold. His throat’s very red and he’s got a temperature.
Simon: I’ll be better soon. 
Mrs. Hunt: Will he?
Doctor: Yes. I’ve give him an injection.
Mrs. Hunt: What’s your advice, doctor?
Doctor: My advice is that he gets plenty of sleep. If he goes out, he’ll probably catch flu.
Mrs. Hunt: Yes, and if he caught flu, it would ruin his holiday.
Doctor: Yes, he won’t enjoy his holiday unless he’s feeling well. He ought to get plenty of sleep today so that he won’t get tired again. Oh, I almost forgot. Here’s a prescription for some medicine. Take it every two hours, Simon, so that you won’t cough.