根据情景，在空格处填入适当的句子，补全对话。

(Sam is at the doctor's room.)

Sam: Good morning, doctor.

Doctor: Good morning, Sam.

Sam: I am feeling terrible, and I have a headache.

Doctor:

Sam: Two days.

Doctor:

Sam:  Yes, my temperature was normal(正常的) and I didn't have a fever. My throat didn't have any pain, either.

Doctor: I think you worked too long.

Sam:

Doctor: No, you needn't take any medicine. It's nothing serious.

Sam:

Doctor: You just need to have a good rest.

Sam: Thank you very much, doctor.