You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: I need to cancel my reservation due to some issues, can you help me out with my concern?

ASSISTANT: Sure, may I know your name?

USER: Myself Paul White.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: We found a reservation on your name, shall I proceed to cancel?

USER: Ok, please cancel it.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.