You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you?

USER: Suddenly, I met with an accident.So, I want to cancel my plan.

ASSISTANT: May I know your name?

USER: Can you cancel my reservation?

ASSISTANT: Sure.

USER: Please, check the reservation on Ronald Carter.

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

USER: That's ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.