You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Christoper hall.

ASSISTANT: How can I assist you today?

USER: Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, please give me a moment.

USER: Ok, sure.

ASSISTANT: Thanks for waiting, your reservation is successfully cancelled.

USER: Thank you for your help.

ASSISTANT: Welcome, have a great day.