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, can you help me with your name to proceed?

USER: Myself Nancy Lopez.

ASSISTANT: Please wait for a moment to check your details.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for choosing us, have a nice day.