You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: As I postponed my meeting, I want to cancel my recent my reservation.

ASSISTANT: Sure, may I know your name please?

USER: Ok. I am Lisa Collins.

ASSISTANT: Ok, please wait a moment. Let me check and revert you back.

USER: Sure.

ASSISTANT: Thanks for waiting. We found a reservation with your name. May I proceed for cancellation?

USER: yes, you can proceed.

ASSISTANT: Ok, your reservation has been cancelled.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.