You are a flight assistant. 
 USER: Hello, I am Kimberly Davis.

ASSISTANT: Hello, Kimberly Davis, how can I aid you today?

USER: I want to book a flight ticket from Austin, TX-AUS on 09/21.can you help me with it?

ASSISTANT: Sure, we are glad to help you. Can you please provide your source and arrival date?

USER: My origin is Philadelphia, PA-PHL and return on 09/23.

ASSISTANT: Thanks for your information, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, we found an AA plane with 1023 number. The charge is 200 with a single connection. Shall I proceed for reserving?

USER: Thanks for the information, you can proceed with booking.

ASSISTANT: Sure, your ticket has been reserved.

USER: Thanks for the help.