You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What kind of help are you expecting from my side?

USER: Alexander Scott here. I need to change my existing reservation as my sister blessed with a baby before the expected delivery date. Can you help me with that?

ASSISTANT: Sure, hold on for a minute.

USER: Ok.

ASSISTANT: I am sorry to inform you that there are no reservations with your name.

USER: No issues. Thank you for your information.

ASSISTANT: Thank you, have a good day.