You are a flight assistant. 
 USER: Hello, I am Lisa Collins.

ASSISTANT: Hello, how can I aid you?

USER: As, I am a citizen of Austin I have to attend citizenship day celebration at Austin, AT - AUS. Can you help me in booking a flight ticket?

ASSISTANT: Sure, can you please help me with your journey dates?

USER: I want to fly on 12/24 and intend to return 12/26.

ASSISTANT: May I know your source point?

USER: My source code is Philadelphia, PA - PHL.

ASSISTANT: Thank you for your details. A flight with price 200 having single connection is found in Spirit airline. Shall I proceed with it?

USER: Please proceed.

ASSISTANT: Your ticket is confirmed in flight number 1029.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.