You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Virginia Brown here.

ASSISTANT: How may I assist you?

USER: I am looking for changing my reservation due to heavy rainfalls. Can you please help me out with that?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you for accepting my request, take your time.

ASSISTANT: Wait a moment please.

USER: Take your time.

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

USER: Oh! I think the ticket was not booked properly while I am booking. Anyway, thank you for the information.

ASSISTANT: Thank you for choosing us.

USER: Welcome.