You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please provide your name.

USER: My name is Kimberly Green.

ASSISTANT: Green, no reservations has been found on your name.

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

ASSISTANT: Thank you for choosing us.