You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: My name is Kathleen Perez and I want to change my existing reservation.

ASSISTANT: Yes sure, please give me a moment to check.

USER: Sure.

ASSISTANT: Perez I have found a reservation on your name. Can I proceed with new one?

USER: Yes,my new reservation departs from JFK and returns from AUS.

ASSISTANT: May I know your planning dates?

USER: Yes,my travelling dates should be from 07/26 to 07/28.

ASSISTANT: Thank you, do you have any requirements?

USER: Also please check that the flight should be with 1 connection and the price should not exceed more than 5000.

ASSISTANT: I got a flight -1024 with a price of 100 and with 1 connection. Shall I proceed?

USER: Sure,this is the flight I am looking for. Please proceed.

ASSISTANT: Thank you for confirmation, your booking is done.

USER: Thank you for helping me to change my reservation.

ASSISTANT: I hope that you will have a great journey.

USER: Thank you.

ASSISTANT: Welcome.