You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I need to change my existing reservation some weather problems, Can you please help me with that?

ASSISTANT: Sure, may I know on which name the ticket has been reserved?

USER: Jeffrey Wright here.

ASSISTANT: Please be on hold, I will revert back to you in couple of minutes.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry to notify, there is no active reservation found on your given name in our records to amend it.

USER: Ok, no problem. Thanks for your information.