You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you for today?

USER: Myself Betty Baker. Can you please help me with changing my reservation as my trip got postponed?

ASSISTANT: I am here to help you about that.

USER: Thank you.

ASSISTANT: Hold on for some time please.

USER: Sure, take your time.

ASSISTANT: Sorry Betty, I can not found any active reservations under your name to change.

USER: Oh! It may not be booked properly due to server issue. Anyway, thank you for your time.

ASSISTANT: Most welcome, hope you have a nice day.