You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to change my existing reservation, which is done in recently. Can you please help me out?

ASSISTANT: Sure, can I know your name please to check the reservation status?

USER: My name is Nicole Moore.

ASSISTANT: Ok, wait a moment please.

USER: Sure, I will wait.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Not a big problem, anyway thank you for the information.

ASSISTANT: Thank you for approaching us.