You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Christine Turner, I want to change my reservation my plan to meet my brother at Oakland is postponed.

ASSISTANT: Ok.

USER: Can you change my reservation?

ASSISTANT: Sure. Please, wait for a while.

USER: Sure.

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

USER: Thank you for the information.

ASSISTANT: Thank you for opting us.