You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you the best today?

USER: I am Laura Adams.

ASSISTANT: OK.

USER: I am planning to change an existing reservation, due to some urgent work. Can you please change my reservation?

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, we did not find any active reservation on your name to change.

USER: That's fine, thank you for your service.

ASSISTANT: Thanks for reaching us, have a great day.