You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your assistance today?

USER:  I am Thomas Jackson want to change my reservation due to prepone of my meeting.

ASSISTANT: Sure, I am at your service. Please give me a moment.

USER: Ok.

ASSISTANT: There is a reservation found on your name, please help me with the new journey dates?

USER: My travelling dates are 11/18 and 11/20.

ASSISTANT: Kindly mention your airport codes?

USER:  I will depart from GA-ATL to NY-JFK.

ASSISTANT: Do you have any limitations?

USER: I need a connection flight with fare 200.

ASSISTANT: There is a connecting flight with Hawaiian airline and price is 200. Shall I proceed?

USER: Provide me flight details?

ASSISTANT: Your booking has been confirmed with 1008 flight.

USER:  OK, confirm my booking.

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

USER: Than you for booking.