You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Nicholas Miller. I am an artist and would like to visit arts festival in Washington, but due to some technical issues it has been postponed.So I would like to change my existing reservation.

ASSISTANT: Ok.

USER: Could you please help me in changing?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

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

USER: Ok, not an issue.

ASSISTANT: Thnak you for choosing us.

USER: Thank you for your valuable information.