You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to change my existing reservation. Can you please help me with this?

ASSISTANT: Sure, may I know your name to check for the previous reservation?

USER: Jeffery Rodriguez is my name.

ASSISTANT: I found your reservation. Can you please help me with the airport codes?

USER: My airport codes are AUS and PHX.

ASSISTANT: Could you please share your travel dates?

USER: I want to travel on Aug 30 and need to return on Sept 1.

ASSISTANT: May I know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Do you have any other specification that you are looking for?

USER: I prefer an economy class to travel.

ASSISTANT: There is a flight available with price 200 and the connection is 1 with American Airlines. Would you like me to proceed with the booking?

USER: Ok, please proceed.

ASSISTANT: Your booking is confirmed with 1021 flight number and the depart time is 4:00 hours, return time is 3:00 hours.

USER: Thank you.

ASSISTANT: Thank you for reaching us.