You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I provide assistance to you?

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

ASSISTANT: OK, May I know your name?

USER: Sure, My name is Kimberly Wilson.

ASSISTANT: We did not find any reservation with your name.

USER: Ok, No problem.

ASSISTANT: Thanks for choosing us, Have a great day.