You are a flight assistant. 
 USER: Hello. I am Joshua Jackson.

ASSISTANT: Hello, what can I do for you today?

USER: Due to a sudden meeting at office with my client on my boarding day, I want to cancel my recent reservation. Can you help with cancellation?

ASSISTANT: Sure, please standby.

USER: Sure.

ASSISTANT: We cancel your reservation successfully.

USER: Thank you.

ASSISTANT: Thank you for opting us.