You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my recent reservation due to bad health issues. Can you help me with that?

ASSISTANT: May I know your name please?

USER: Sure, Joseph Carter here.

ASSISTANT: Please wait a while.

USER: Sure, I will wait.

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

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for opting us.