You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how glad that I can help you?

USER: Can you please help me with changing my reservation?

ASSISTANT: Sure, I can help you with flight ticket changing process.

USER: Myself John Miller.

ASSISTANT: Ok, please allow me a moment to check it.

USER: Sure.

ASSISTANT: On your name I have found the reservation, can you please share your airport codes?

USER: My airport codes are from EWR to OAK.

ASSISTANT: Can your please provide your new travel dates?

USER: My journey dates are from Feb 14 to Feb 16.

ASSISTANT: Is there any other specifications?

USER: My depart time is evening.

ASSISTANT: On whose name that I have book your flight ticket?

USER: I already said my name.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: There is a flight 1009 in JetBlue airlines on your new travel dates and location codes, is it ok for you to book the flight ticket?

USER: Please book it.

ASSISTANT: The flight ticket booking is done in an economy class and the departure time is at 23:00 PM.

USER: Thank you.