You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Please cancel my recent reservation, due to some health issue. Can you please help me with this?

ASSISTANT: Sure, I will help you. May I know your good name?

USER: I am Debra Brown.

ASSISTANT: Ok, give me a minute.

USER: Ok.

ASSISTANT: Sorry to say that, no reservation was found on your name to cancel.

USER: Ok, Thank you.

ASSISTANT: Thank you for choosing us.