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

ASSISTANT: Hello, how can I aid you?

USER: I was asked to visit Zilker Metropolitan Park, Can you please help me in booking a ticket?

ASSISTANT: Sure. May I know your travelling dates?

USER: My travel dates are from 09/22 to 09/24.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are from ORD to AUS.

ASSISTANT: Do you have any other specifications?

USER: My price limit is 200. I am looking for a halt.

ASSISTANT: We found a flight with UA airline with flight number:1014. The fare is 200 with a halt.

USER: it's perfect, Please proceed with it.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.