You are a flight assistant. 
 USER: Hello, Pamela Evans here.

ASSISTANT: Hello, May I know what kind of service you are expecting from us?

USER: Due to an health issue, I am not able to attend for the function. So I want to cancel my recent reservation.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: We apologize, we did not find any flights with your recent reservation against your name.

USER: Ok, no problem.

ASSISTANT: Thank you for your patience, Have a great day.