You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I need to book a flight ticket to attend my parents anniversary on 12/18 at Detroit, MI - DTW.

ASSISTANT: Sure, To give you complete information about flight details, I need your origin place and journey dates.

USER: My starting point is at Austin, TX - AUS on 12/18 and return must be on 12/20.

ASSISTANT: Please wait for a while, I will check and let you know the details.

USER: OK.

ASSISTANT: Can I know your name please?

USER: Sandra Smith is my name.

ASSISTANT: I find a flight with your preference having flight number: 1002, Airline:Frontier, price: 100 and one connection. Shall I proceed with booking?

USER: OK, you can proceed.

ASSISTANT: Your ticket is confirmed.

USER: Thanks for booking.

ASSISTANT: Thank you, Have a great day.