You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my reservation as I met with an accident, could you please do that for me?

ASSISTANT: Sure, I will help you to cancel your reservation.

USER: Thank you.

ASSISTANT: May I know your name?

USER: My name is Betty Evans.

ASSISTANT: Sorry, no reservation found on your name to cancel your reservation.

USER: No problem, thank you for checking.

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