You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Due to an emergency, I want to cancel my reservation. Can you help me?

ASSISTANT: Sure,may I know your name?

USER: Laura Perez here.

ASSISTANT: Sorry, there is no reservation found.

USER: No problem.

ASSISTANT: Thank you for opting us.

USER: Thank you, Have a nice day.