You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Shirley Turner.

ASSISTANT: How can I aid you Turner?

USER: I want to change my recent reservation as my meeting with my friend has been relocated. Help me in changing my recent reservation.

ASSISTANT: Sure, I will help you Shirley.

USER: Thank you.

ASSISTANT: Please wait for a while, I will check the present status and get back to you.

USER: Sure.

ASSISTANT: Sorry  Shirley Turner, no reservation found on your name in our reservation list.

USER: Its ok, thank you for your assistance.

ASSISTANT: Thank you for approaching us, have a nice day.