You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to spend some more days with my family, please help me in changing my existing reservation.

ASSISTANT: Sure, please mention your name to check your reservation details in our database.

USER: My name is Alexander Lopez.

ASSISTANT: We found your reservation, can you please help me with your travel dates?

USER: My planned travel dates are on Sept 2 and Sept 4.

ASSISTANT: May I know your airport codes?

USER: My airport codes are OAK and ATL.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: Is there any other concern?

USER: No, thank you for asking.

ASSISTANT: Flight-1016 is available in AA airlines with single connection and the ticket fare is 100. Can I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your booking is confirmed.

USER: Thank you for your assistance.