You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you now?

USER: Due to some urgent meeting, I am planning to change my existing reservation. Can you please help me for this?

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

USER: Myself Anthony Taylor.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that, we have not found any active reservation on your name in our records.

USER: Not a big deal, anyhow thank you very much for checking the reservation status.

ASSISTANT: Thank you for opting us.