You are a flight assistant. 
 USER: Hello. Amy Brown here.

ASSISTANT: Hello, how may I help you?

USER: Due to some emergency, I have to stay in my office. So, can you please cancel my reservation?

ASSISTANT: Sure, I will help you. Please hold on a moment.

USER: Sure.

ASSISTANT: Amy, no reservation has been found on your name in our records.

USER: It's ok. Thank you for your time.

ASSISTANT: Thank you for choosing our service.