You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I serve you today?

USER: I am Ruth Hall. I made a earlier reservation to attend for movie auditions, due to some technical problems it got postponed.

ASSISTANT: Ok.

USER: Can you please change my existing reservation?

ASSISTANT: Sure. Please wait for a moment, I will check your previous reservation.

USER: Sure.

ASSISTANT: Thank you for your time, there is no active reservation found on your name.

USER: Ok, no issues. May be reservation not done properly. Anyway thank you for your information.

ASSISTANT: Thank you for contacting us.