You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: I am Anthony Carter. I would like to change my existing reservation due to bad weather conditions. Can you please help me with this?

ASSISTANT: Sure I am here to help you out. Please allow me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry  Anthony Carter, there is no reservation on your name in our database.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for reaching us.