You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Carolyn Wright.

ASSISTANT: How can I help you?

USER: The event which I am planning to attend has been postponed. Can you please change my existing reservation?

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: I have searched online but I could not find your flight reservation under your name.

USER: Its ok, thank you for the information.

ASSISTANT: My pleasure, have a nice day.