You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Carol Allen.

ASSISTANT: How can I help you?

USER: I would like to cancel my recent reservation due to some health issues, can you help me in that?

ASSISTANT: Please wait a while.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

USER: That's ok, no problem. Thank you for checking.

ASSISTANT: Thank you for opting us.