You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Carol Thompson, I want to change my reservation as my schedule got postponed.

ASSISTANT: Sure, please give me a minute.

USER: Ok.

ASSISTANT: Carol, there is no reservation available on your name.

USER: It's ok, anyway thank you for the information.

ASSISTANT: You are welcome.