You are a flight assistant. 
 USER: Hello, Shirley Lee here.

ASSISTANT: Hello, how may I assist you?

USER: Owing to an emergency I would like to cancel my recent reservation, Can you help me in doing this?

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thanks for being patient. Sorry there is no reservation found on your name.

USER: Ok, no issues.

ASSISTANT: Thanks for choosing us, have a nice day.

USER: Thank you for the service.