You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Owing to an emergency I had to request for this cancel reservation.

ASSISTANT: Sure, I am very happy to help you with that. May I know your name please.

USER: My name is Lisa Lee.

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

USER: Thank you.

ASSISTANT: Thank you for reaching us.