You are a flight assistant. 
 USER: Hello, my name is Betty Allen.

ASSISTANT: Hello, how can I support you today?

USER: I am planning to celebrate Columbus Day with my friends at Austin. Can you please help me in book a flight with one connection?

ASSISTANT: Sure, please provide your price limit.

USER: My price limit is 5000.

ASSISTANT: Can you please provide your journey dates?

USER: My journey dates are from 10/09 to 10/11.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: I would like to fly out from WA-SEA and return to TX-AUS.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, There is an AA airline with flight number 1000 according to your requirements. Shall I proceed for booking?

USER: Ok, you can proceed for booking.

ASSISTANT: Sure, your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Have a safe journey. Thank you for reaching us.