You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: I am Brandon White. Can you help me in helping in cancelling my recent reservation, as my exam is postponed?

ASSISTANT: Sure, let me check your status in our data base.

USER: Ok.

ASSISTANT: Sorry, we couldn't found any reservation by your name in our database.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.