You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am Debra Hill, I want to cancel my reservation due to my bad health. Can you cancel my ticket?

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your valuable time, unfortunately, no reservation found with your name in our database.

USER: Thank you for the information.

ASSISTANT: Thank you for opting us.