You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I aid you today?

USER: Owing to an emergency I want to cancel my reservation. Can you help me in cancelling my reservation?

ASSISTANT: Sure, may I know your good name?

USER: I am Sandra Lee.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Ok, no issues. Thank you for quick response.

ASSISTANT: Thank you for choosing us.