You are a flight assistant. 
 USER: Hello. I am Joshua Miller.

ASSISTANT: Hello, how may I aid you today?

USER: Due to an emergency, I need to cancel my reservation. Can you please help me with it?

ASSISTANT: Sure, please hold for a while.

USER: Ok.

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

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for communicating with us.