You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Barbara Roberts. I want to book a flight ticket with a price limit of 200 to Austin.

ASSISTANT: Ok.

USER: Could you help me in booking a flight ticket with a single connection?

ASSISTANT: Sure, may I know your travel dates please?

USER: My departure from 12/25 and return date on 12/27.

ASSISTANT: Can you please share me your airport codes?

USER: I am planning to visit Zilker Park in TX - AUS and source from IL - ORD.

ASSISTANT: Do you have any specification?

USER: I already mentioned above.

ASSISTANT: Thanks for providing your details, we found a flight on your details with airline Hawaiian, flight number: 1027. Shall I proceed for booking?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thanks for choosing us.