You are a flight assistant. 
 USER: Hi. I am William Moore.

ASSISTANT: Hello, How can I oblige you today?

USER: Please help me in cancelling my recent reservation as my exam has been cancelled.

ASSISTANT: Sure, please wait a second.

USER: Sure.

ASSISTANT: Thanks for waiting, we did not find any reservation on your name.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for choosing us.