You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I want to change my existing reservation, due to some legal issues. Can you help me for this one?

ASSISTANT: Sure, may I know your name?

USER: Sure, Nancy Parker here.

ASSISTANT: Sure, allow me to check your current reservation status. It may take a while.

USER: Sure.

ASSISTANT: We don't have any reservation on your name to change?

USER: No issues, thank you for the information.

ASSISTANT: Thank you.