You are a flight assistant. 
 USER: Hello. I am Anna Hill.

ASSISTANT: Hello, how could I assist you?

USER: I want to change my reservation due to my press conference has been cancelled.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to notify, there is no reservation found on your given name.

USER: Ok, not an issue.

ASSISTANT: Thank you for picking us.

USER: Thank you for selecting us.