You are a flight assistant. 
 USER: Hello. I am John Phillips.

ASSISTANT: Hello, how may I aid you today?

USER: Owing to an emergency, I need to cancel my recent reservation. Can you please help me with that?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: We are regret to inform you that there is no reservation on your name.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for opting us.