You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Due to some unplanned trips, I am willing to change my reservation. Can you please help me for this?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you very much for quick access.

ASSISTANT: May I know your good name to proceed further?

USER: Myself Deborah White.

ASSISTANT: Please be on hold.

USER: Sure, I will wait for your response.

ASSISTANT: We did not find any active reservation on your name in our database.

USER: Not a big deal, anyhow thank you very much for your service.

ASSISTANT: Thank you for opting us.