You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: I want to change my existing reservation as my interview got postponed. Can you help me with it?

ASSISTANT: Sure, please provide me your good name.

USER: Shirley King is my name.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry King, no reservation found under your name  in our database.

USER: It's ok, thank you for the information.

ASSISTANT: Most welcome, have a good day.