Hello.
user
Hello. How may I help you?
assistant
Due to sudden health issue, I am not able to travel in a flight. So, I would like to cancel my reservation. Can you please help me out with that?
user
May I know your name please?
assistant
Sure, I have reserved it on the name of Brian Martinez.
user
No reservation found  in our database with your name.
assistant
Oh! I think the ticket was cancelled by my cousin. Anyway, thank you for the information.
user
Thank you have a good day.
assistant
Welcome.
user