You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Timothy Thompson. I am planning to celebrate Christmas in Austin, so please book a flight ticket within a price limit of 200.

ASSISTANT: Sure, could you please share your airport codes?

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

ASSISTANT: Please share your travelling dates.

USER: I would like to fly on 12/24, return on 12/26.

ASSISTANT: We found a flight with single connection and price is 100 of 1020 flight. Shall I proceed?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been confirmed with UA airlines.

USER: Thank you for your help.

ASSISTANT: Thank you.