You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I am Carolyn Harris. Can you please help me in changing my recent reservation?

ASSISTANT: Sure, please allow me a moment to check for your status is active or not.

USER: Ok, sure.

ASSISTANT: Thank you for waiting. Sorry to say, there is no active reservation have been found under your name in our database to amend it.

USER: Ok, fine, thank you for checking.

ASSISTANT: Thank you for reaching us.