You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Please change my reservation as my meeting was postponed.

ASSISTANT: Sure, can I know your name please?

USER: Thank you for assisting me, myself Emily Carter.

ASSISTANT: Ok, wait a moment please.

USER: Ok, I will wait.

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

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you.