You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you for today?

USER: Could you help me in the cancelling the recent reservation?

ASSISTANT: Sure, may I know your name please?

USER: Yes, my name is William Hernandez.

ASSISTANT: OK, please wait for a moment.

USER: OK,sure.

ASSISTANT: OK William, your reservation is successfully cancelled.

USER: It Sounds good, thank you.

ASSISTANT: Thank you for approaching us. Have a great day!.