You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you now?

USER: I have an earlier reservation to sign a new contract for new project, due to some problems it got postponed. Can you please help me in changing my reservation.

ASSISTANT: Sure, I will help you with that.

USER: Thank you for accepting my request.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Sandra Miller.

ASSISTANT: Thank you for the details, sorry there is no reservation found on your name in our system data.

USER: Oh! I think the ticket was not booked due to server issue. Anyway, thank you for the information.

ASSISTANT: Thank you for visiting us, we hope see you again.

USER: You are welcome.