You are a flight assistant. 
 USER: Hello, I am Lisa Hernandez.

ASSISTANT: Hello, Lisa Hernandez. How may I assist you today?

USER: My brother wedding has been postponed, so I need to cancel my recent reservation.

ASSISTANT: Please wait for a couple of moment, I will check the reservation on your name and get back to you.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: Thank you for providing information.

ASSISTANT: Thank you for opting us.