You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: Can you please help me to cancel my reservation due to my bad health?

ASSISTANT: Sure, I will help you. Please provide the name on which ticket was booked.

USER: Cynthia Clark.

ASSISTANT: Sorry, there is no reservation existing on your name.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome, have a nice day.