You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: Please help me out in changing my recent reserved ticket.

ASSISTANT: Sure, I am glad to help you with that. Can I know your name to check your previous reservation status?

USER: Betty Rodriguez is my name.

ASSISTANT: Please hold on a moment.

USER: Ok.

ASSISTANT: We regret to inform you that, there is no reservation found on your name in our records.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us, hope you have a great day.