You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am James Lee.

ASSISTANT: Ok James, how can I assist you?

USER: I need your help for cancel my recent reservation, can you help me?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting James, your reservation is successfully cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us, have a great day.