You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Owing to emergency, I want to cancel my reservation, can you help me out?

ASSISTANT: Sure, may I know your name please?

USER: Yes, my name is Cynthia White.

ASSISTANT: OK, please hold on.

USER: OK.

ASSISTANT: Sorry Cynthia, there is no reservation found on your name.

USER: OK, thank you.

ASSISTANT: Thank you, for consulting us.