You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Sandra Green here. I met with an accident last day, so I want to cancel my reservation. Can you help me out?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: We found a reservation on your good name.

USER: Ok, no issue.

ASSISTANT: Shall I proceed to cancellation?

USER: thank you. Yes, please proceed.

ASSISTANT: Your reservation has been successfully cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you.