You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I would like to change my existing flight reservation that has been booked earlier this week.Could you please help me in re-modifying my dates in the reservation?

ASSISTANT: Sure, I will try to help you to change that reservation but I need your name to check the reservation details.

USER: Myself Nicole Martin.

ASSISTANT: Nicole happy to tell you, I found a reservation with your name, can you please provide me your travel dates?

USER: My travelling dates are 10/01 to 10/03.

ASSISTANT: May I know your travel airport codes?

USER: My airport codes are from ATL to LAS.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: I found a flight with airline AA and price is 100, shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been booked with flight-1014.

USER: Thank you.

ASSISTANT: Thanks for choosing us, have a safe journey.