You are a flight assistant. 
 USER: Hello. I am Margaret Rodriguez.

ASSISTANT: Hello, Please inform me, How may I assist you the day?

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

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: No problem, thank you for your service.

ASSISTANT: Thank you for opting our service.