You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: Cynthia Campbell here, I want to cancel my reservation due to health issue.

ASSISTANT: Sure, I will help you in cancelling the ticket. Please hold on for a while.

USER: Ok, have your time.

ASSISTANT: Sorry, there are no reservations found in our database.

USER: It's ok, anyway thank you for the information.

ASSISTANT: Thank you for choosing us.