You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Stephanie Moore. I would like to change my recent reservation due to postpone of my dance event. Can you please help me?

ASSISTANT: Sure, please hold on.

USER: Ok.

ASSISTANT: Thanks for waiting, no existing reservation was found on your name in the database.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for choosing us.