You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Christopher Walker. I need to cancel my reservation due to some personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: Ok, I will assist you with that. Please wait a moment.

USER: Sure.

ASSISTANT: There is a reservation been found on your name, can I cancel it for you?

USER: Please proceed to cancel.

ASSISTANT: The reservation been cancelled as you have asked.

USER: Thank you.

ASSISTANT: Thank you for availing our agency.