You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I need a help from your end to change my existing reservation which I done on the name Carol Lee. Please can you help?

ASSISTANT: Sure, I am glad to help you with that, please hold on for a moment to check your reservation status.

USER: Ok, take your time.

ASSISTANT: May I know your name please?

USER: I had mentioned.

ASSISTANT: Carol, but I did not find any reservation with your name in my database.

USER: Ok, not a problem. Thank you for helping me with the information.

ASSISTANT: It's my pleasure, have a nice day.