You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Shirley Moore. Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you please help me in changing the reservation?

ASSISTANT: Sure, wait a minute.

USER: Ok.

ASSISTANT: There was no reservation found on your name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.