You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to change my existing reservation, due to bad weather at my source. Can you please help me with this?

ASSISTANT: Sure, I am here to help you out. Please provide me your name.

USER: Sure, my name is Carolyn White.

ASSISTANT: Sorry White, 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.