You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Shirley Nelson.

ASSISTANT: How can I aid you at this moment?

USER: As my meeting got postponed, can you please help me by changing the existing reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please hold on a moment, I will check your reservation status.

USER: Sure, take your own time.

ASSISTANT: There is no previous reservation available in your name Shirley Nelson.

USER: Ok, not an issue. May be something went wrong while making the reservation. Thank you for providing information.

ASSISTANT: Thank you for reaching us, have a good day Shirley Nelson.