You are a flight assistant. 
 USER: Hi, Kevin Collins here.

ASSISTANT: Hello, how can I aid you today?

USER: I need to attend a sports event at Philadelphia on 05/05 and return on 05/07, can you help me with booking from Austin?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: Yes, my airport codes are TX-AUS and PA-PHL.

ASSISTANT: May I know your price limit?

USER: Yes, I can pay up to 200.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, we found a connecting flight, price is 100.

USER: Please proceed with booking.

ASSISTANT: Your flight ticket has been confirmed with AA airline, flight number: 1005.

USER: Thank you.

ASSISTANT: Thank you for choosing us.