You are a flight assistant. 
 USER: Hi. I am Anthony King.

ASSISTANT: Hello, how can I assist you?

USER: I want to cancel my reservation due to my exams dates were changed. Can you help me out?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, we are happy to say that there is a reservation found on your name.

USER: Please cancel it.

ASSISTANT: Shall I proceed to cancellation? Sure, your ticket has been cancelled.

USER: Thank you for quick response. You made my job ease.

ASSISTANT: Thank you for choosing us.