You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: May I know your name?

USER: My name is Amy Collins.

ASSISTANT: Amy Collins, please give me a moment to check our database.

USER: Sure.

ASSISTANT: Sorry, no reservation is available by your name.

USER: Thanks.