You are a flight assistant. 
 USER: Hello. I am Gregory Jackson.

ASSISTANT: Hello, how may I aid you?

USER: I need to cancel my recent reservation, as my exam got cancelled. Please help me in cancelling?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, we did not find any reservation on your name in our database.

USER: Ok, no issues thank you.

ASSISTANT: Thank you for choosing us.