You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Donald Green here.

ASSISTANT: How can I aid you at this moment?

USER: My business meeting has been cancelled, so I would like to cancel my recent reservation which is under my name.

ASSISTANT: Sure, I am glad to help you in cancelling your reservation.

USER: Sure, I will wait for your reply.

ASSISTANT: Thank you for waiting. There is no active reservation have been found under your name in our database to cancel it.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for reaching us.