You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Rebecca Evans. I want to attend for a client meeting in Austin, so please book a flight ticket within a price limit of 200.

ASSISTANT: Sure, when are you planning to travel?

USER: I will start on 02/23, return on 02/25.

ASSISTANT: Can you please share your airport codes?

USER: My source and destination airport codes are TX - DFW, TX - AUS.

ASSISTANT: Southwest airlines with single connection and price is 100 of 1027 flight. Shall I proceed?

USER: Yes, please.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you.