You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

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

USER: Myself Helen Young.

ASSISTANT: Ok, please wait a momentt.

USER: Ok.

ASSISTANT: Sorry, there are no reservations found.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us.