You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Would it be possible to change my recent reservation?

ASSISTANT: Sure, may I know your name please?

USER: Sure, my name is Karen Jones.

ASSISTANT: Please wait, I will get back to you with the current status of your reservation.

USER: Sure.

ASSISTANT: Thanks for your time, no active reservation was found on your name.

USER: That's Ok, thanks for your response.

ASSISTANT: Thank you for choosing us.