You are a flight assistant. 
 USER: Hello, my name is Ronald Williams.

ASSISTANT: Hello, Ronald Williams, how can I support you?

USER: Recently I met with an accident, so I want to cancel my recent reservation.

ASSISTANT: Sure, we are gleeful to help you. Please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for your patience, we found an existing reservation based on your name. Can I proceed for cancellation?

USER: Sure.

ASSISTANT: Ok, your reservation has been cancelled.

USER: Thank you for your good service.

ASSISTANT: Thanks for choosing us, have a nice day.

USER: Your welcome.