You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Due to some technical issues, my meeting has been postponed. Can you please change my existing reservation?

ASSISTANT: Sure. May I know your good name?

USER: Sure, I am Eric Jackson.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Sorry to say that, there is no existing reservation found on your name.

USER: Ok, Thank you for providing information.

ASSISTANT: Thanks for connecting us.