You are a flight assistant. 
 USER: Hi. I am Nicole Phillips.

ASSISTANT: Hello, may I know how best I can help you today?

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

ASSISTANT: Sure, I can help you in that.

USER: Ok.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We are sorry to specify that, there is no active reservation found on your name to cancel it.

USER: That's ok, thank you for checking.

ASSISTANT: Thanks for communicating with us.