You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Owing an emergency, I want to cancel my recent reservation.  Can you please help me out?

ASSISTANT: Sure, please share you name to check your existing reservation.

USER: I am Stephanie Phillips.

ASSISTANT: We don't have any reservation on your name to cancel.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you.