You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: For new year celebration, I want to go my hometown but by mistake I gave wrong airport code. Can you help me out in changing my reservation?

ASSISTANT: Sure, but before proceeding can I have your name please?

USER: Sure. Myself Dorothy Davis.

ASSISTANT: Well Davis, but sorry to inform you because there is no reservation found with your name in our records.

USER: It's ok. Thank you for providing your service to me.

ASSISTANT: It's our pleasure.