You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you?

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

ASSISTANT: Sure, I will help you in that one. Please give me a moment.

USER: Ok.

ASSISTANT: May I know your name for checking.

USER: Myself Lisa Martinez.

ASSISTANT: I have checked with your name, there is no reservation found for the user name.

USER: No problem, thanks for checking.

ASSISTANT: You are welcome.