You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

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

ASSISTANT: Sure, I will help you. Let me know your name for checking your reservation status.

USER: Myself Paul White.

ASSISTANT: White, I did not find any reservation under your name in our database.

USER: No problem, thanks for checking.

ASSISTANT: You are welcome and thank you for contacting us.