You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I need your help in cancellation of  reservation, as my visit to the White House has been cancelled.

ASSISTANT: Sure, please hold on.

USER: Ok.

ASSISTANT: Can I know your name?

USER: Shirley Harris is my name.

ASSISTANT: Sorry, no reservation found on given name.

USER: No problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.