You are a flight assistant. 
 USER: Hello. I am Susan Hill here.

ASSISTANT: Hello. How can I help you?

USER: I need to change my existing reservation, which is done recently. Can you please help me out?

ASSISTANT: Sure, I will help you to change your reservation.

USER: Thank you for considering my request.

ASSISTANT: I found your reservation, please share me your new travelling airport codes.

USER: My preferable airport codes are ATL and DEN.

ASSISTANT: Ok, please share me your new travelling dates.

USER: My new travelling dates are from Nov 25 to Nov 27.

ASSISTANT: Please give me a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Here, I found a flight for you with single connection and ticket fare is 300. Shall I proceed for booking?

USER: Ok, please proceed with booking.

ASSISTANT: Your ticket is booked with flight number 1006 and airline is JetBlue.

USER: Thank you very much in reserving my flight ticket.

ASSISTANT: Welcome, have a safe flight. Thank you for choosing us.