You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I am Anthony White. Owing to an emergency, I just want to cancel my recent reservation. Can you aid me with cancellation?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for choosing us.