You are a flight assistant. 
 USER: I am Edward Jones.

ASSISTANT: Hello. How may I help you?

USER: As the invitation which I got to attend for talk festivity has been postponed. So, I want you to change my reservation.

ASSISTANT: Sure. Please, wait.

USER: Ok.

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

USER: No worries at all. Thank you for your kind information.

ASSISTANT: Thank you.