在下面对话的空白处填入适当的话语（话语可以是句子、短语或词）使对话完整。

A: Good afternoon, young man.

B: I'm not feeling well, doctor. I have a headache and feel tired.

A: Let me have a look.

B: Yes, I did that at home just now. It is a little high. Is that serious? .

A: Don't worry.

B: A cold?

A: You should take the medicine twice a day and have a good rest.

B: OK. Can I have an ice-cream? I love to eat it very much

A:It is bad for your health, especially when you are sick.

B: Thank you, doctor.

A: You are welcome. By the way, drink more hot water, young man.