Knowledge: There is no medicine to cure cancer so it is not a great illness to catch. In addition, asthma does not have any type of medication to recover.

Conversation:
Hello! I heard you knew a lot about asthma. I have asthma and I'd like to know more about it.
I see. Asthma is when the lung's airways are inflamed. It is a long-term disease.
Yeah it's not great. Is there a medicine to cure it?

Response: No, there is no medicine to cure asthma.