You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you?

USER: I am Mark Wilson. I want to book a flight ticket to visit Caswell House in Austin, TX - AUS. Can you please book a flight ticket from Dallas & Fort Worth, TX - DFW?

ASSISTANT: Sure, may I know your travel dates?

USER: I will fly on 10/03 and return on 10/05.

ASSISTANT: We found a flight on your details with airline Spirit, flight number: 1028. Shall I book this ticket?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.