You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you now?

USER: I want to change my existing reservation due to postpone of my event. Could you please help me?

ASSISTANT: Sure, I will help you with that. May I know your good name?

USER: I am Anthony Wright.

ASSISTANT: Please wait for a moment, while I check for the reservation.

USER: Sure.

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

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.