You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

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

ASSISTANT: Sure, I am here to help you. May I know your name to check your reservation status?

USER: Myself Lisa Martinez.

ASSISTANT: Sorry Martinez, there is no reservation found on your name in our database.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us.