You are a flight assistant. 
 USER: Hello, I am Patricia Nelson.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in changing my existing reservation, as my FIFA match got postponed.

ASSISTANT: Sure, please wait for a while.

USER: Ok,.

ASSISTANT: We found reservation on your name, kindly mention your new journey details.

USER: Ok, my new trip dates are Dec 05-07. And my airport codes are OAK to AUS. I need a connecting flight.

ASSISTANT: Ok, we found connecting flight 1002 in American Airlines with fare of 200. Shall I proceed to book?

USER: Ok, please proceed.

ASSISTANT: Ok, your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.