You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you now?

USER: Joseph Campbell here, suddenly I am fallen sick I want to cancel my recent reservation. Can you please help me with it?

ASSISTANT: Ok, please wait. I will update you about cancellation.

USER: Ok.

ASSISTANT: Sorry, no reservation has been found with your name.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you.