You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Please help me in changing my reservation as I am not feeling well.

ASSISTANT: Sure, may I know your name please?

USER: Yes, I am Betty Roberts.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no active reservation found with your name in our records.

USER: Not a problem with that, anyways thank you for the information.

ASSISTANT: Most welcome.