You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you now?

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

ASSISTANT: Sure, I will help you with that. May I know your name please?

USER: Myself Mary Allen.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry Mary, there is no reservation found on your name.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for approaching us, have a nice day.