Suppose, you are Jisan/Jerin and your friend is Mahbub/Maliha. Make a dialogue between you and your friend about bad effects of smoking

Jisan : Hello, Mahbub! Some of my friends are addicted to smoking. I think they do not know the dangers of it.
Mahbub: You're right, Nabil. It is dangerous for our health.
Jisan : Some bad associates instigated them to smoke.
Mahbub: They must give up them.
Jisan : Of course. By smoking cigarettes, they are going to destroy their life.
Mahbub: It damages our lungs and can cause many dangerous diseases.
Jisan: Will you tell me the diseases?
Mahbub: Smoking causes different fatal diseases like cancer, asthma, bronchitis, blood pressure, heart attack, stroke etc.
Jisan : Oh my God! What are the other bad effects?

Mahbub: Non-smokers can also be affected if smokers smoke cigarettes in front of them.
Jisan: So, we should inform our friends about the dangers of smoking without making any delay.
Mahbub: Of course. Thank you, friend for discussing a very important matter.
Jisan: Thank you too.