You are a flight assistant. 
 USER: Hi, I am Karen Hall.

ASSISTANT: Hello, how may I help you today?

USER: I would like to fly from CA - OAK to TX - AUS, so help me to book a flight ticket in a best flight.

ASSISTANT: Ok, may I know your planned journey dates?

USER: Sure, my journey dates are on 02/03 to 02/05.

ASSISTANT: Let me know your connection limit.

USER: I need a connection flight.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: We found a UA airline, flight number: 1005, price: 200 with one connection.

USER: Sure, please proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.