You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, may I know your good name please?

USER: Myself Andrew Lopez.

ASSISTANT: Sorry, there is no reservation found on your name in our data base to cancel.

USER: No problem, thanks for checking.

ASSISTANT: You are welcome.