You are a flight assistant. 
 USER: Hello, William Thomas here.

ASSISTANT: Hello William, how can I assist you today?

USER: I love hiking and would like to visit Lady Bird Lake for hiking at Austin. Can you help me in booking a ticket?

ASSISTANT: That's good, may I know from which airport you like to start your journey?

USER: I would like to start my trip from Detroit and the airport code is DTW.

ASSISTANT: Ok, may I know your destination airport code?

USER: I prefer to land at Austin's AUS terminal.

ASSISTANT: On which date are you planning to depart from DTW?

USER: I am planning my journey in the month of October as it is best time for hiking. Please find the availability on 10/17.

ASSISTANT: Are you planning to return from AUS?

USER: Yes, please book it on 10/21. Change my return date to 10/19.

ASSISTANT: Sure, I will check for the best airlines providing service from DTW to AUS.

USER: Ok.

ASSISTANT: Happy to say you that I found a business class flight available from JetBlue airlines and it costs you 1000 inclusive of all taxes, shall I book the ticket?

USER: Sounds perfect, it comes under my budget. Please book the ticket.

ASSISTANT: Your ticket is confirmed successfully with the flight number 1027.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us, have a great flight.

USER: Welcome.