You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, please give me a moment to check your ticket status. May I know your name?

USER: Myself Alexander Moore.

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

USER: No problem, thanks for checking.

ASSISTANT: Thank you for choosing us.