You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what help can I do for you?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me out?

ASSISTANT: Ok, may I know your name please?

USER: Sure, my name is Helen Gonzalez.

ASSISTANT: Sorry to inform you Helen, there is no reservation found with your name in our database.

USER: Ok, no issue.

ASSISTANT: Thank you, have a nice day.

USER: Thank you.