You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I be your helping hand?

USER: As the food festival which I got an invitation to attend has been postponed, I want you to change my reservation.

ASSISTANT: Ok.

USER: Can you please help me?

ASSISTANT: Sure, I would be happy to help you. Let me know your name to check the previous reservation.

USER: Ok, I am Carolyn Wright.

ASSISTANT: Please hold on a moment.

USER: Sure.

ASSISTANT: Thanks for your time. We have not found any reservation with your name.

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for approaching us.