You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: As my plan to attend for meeting got postponed, I want to change my reservation. Can you please help me?

ASSISTANT: Sure, may I know your name please?

USER: I am Carol Anderson.

ASSISTANT: Please be on hold.

USER: Ok.

ASSISTANT: Thank you for your time. We are regret to say that, there is no active reservation found in your name.

USER: It's ok, thank you for your kind information.

ASSISTANT: Thank you for availing us. Have a nice day.