You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Can you help me in cancelling my recent reservation, as my exam is postponed?

ASSISTANT: Sure, I will help you. May I know your name?

USER: I am Rachel Scott.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a reservation on your name and it has been cancelled.

USER: Thank you for understanding and cancelling my request.

ASSISTANT: Thank you.