You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I need to cancel my ticket, can you help me?

ASSISTANT: Sure, may I know your name?

USER: I am David Parker.

ASSISTANT: Please wait for couple of minutes.

USER: Sure.

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

USER: Yes, cancel it.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.