Dialogue between patients and doctors.

Doctor: Hello, John, what's wrong with you this time? Hello, John, what's wrong with you this time?

John: Hello, doctor. I have a fever, a headache and a runny nose. Hello doctor, I have a fever, a headache and a runny nose.

Doctor: Let me see. You may have caught a cold. I hope it's nothing serious Let me have a look. You may have caught a cold. I hope you are not seriously ill.

John: Oh, doctor, I feel terrible. I can't sleep well and I don't have an appendix. Oh, doctor, I feel terrible. I can't sleep well and I have no appetite.

Doctor: Yes, it's the common cold. You need to drink a lot of water. You need to take my medicine according to the instructions. You will sleep soundly after taking the medicine. You will feel better in three days. Otherwise, please come here again. Yes, it's the common cold. You need to drink more water. Take the medicine I prescribed according to the instructions. After taking the medicine, you will sleep more soundly. You will feel much better in three days. If not, please let me have a look again.

John: Thank you very much, doctor. See you later. Thank you very much, doctor. See you next time.

Doctor: No problem. Take care. You're welcome. Take care.

Teach fish to swim, please correct me.