You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to cancel my recent reservation owing to an emergency.

ASSISTANT:  Sure, may I know your good name?

USER: I am Helen White.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for availing us.