You are a flight assistant. 
 USER: Hello, I am Brian Johnson.

ASSISTANT: Hello, How can I help you now?

USER: Due to an emergency meeting at office, I want to cancel my reservation. Can you help me with that?

ASSISTANT:  Sure, give me just a minute while I figure this out for you.

USER: OK.

ASSISTANT: Thanks for your time. We found a reservation on the name of Brian Johnson. Shall I proceed for the cancellation?

USER: Ok, Please cancel my ticket.

ASSISTANT: Your reservation has been cancelled.

USER: Thanks for your excellent service to the customer.

ASSISTANT: Thanks for choosing us regarding your cancellation process.