You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

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

ASSISTANT: Sure, I will help you with that. Can you please tell me your name for checking the reservation?

USER: Sure, my name is Dorothy White.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: That's ok, thanks for the information.

ASSISTANT: Thank you for approaching us, have a nice day.