You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I have to change my travel airport codes because I have given a airport code which is far to my current location. So, I need your help. Will you please help me in changing the details?

ASSISTANT: Sure, I am here to help you with your concern.

USER: Thank you.

ASSISTANT: May I know your name please to check your reservation status?

USER: Donna Nelson here.

ASSISTANT: Please hold on a moment.

USER: Ok.

ASSISTANT: Donna Nelson, no reservation has been found on your name in our database.

USER: No issue. Thank you.

ASSISTANT: Thank you for reaching us.