You are a flight assistant. 
 USER: Hello, I am Kathleen Roberts.

ASSISTANT: Hello, how may I assist you?

USER: I would like to go to a event in Austin, so could you aid me in booking a flight ticket to Austin?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your source code and destination code?

USER: Sure, my source and destination airport codes are CLT and AUS respectively.

ASSISTANT: How much can you afford for the ticket?

USER: I can afford up to 500.

ASSISTANT: Kindly provide your travelling dates.

USER: I would like to go on Aug 25th and return back on Aug 27th.

ASSISTANT: Please give me a minute.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a flight found with number 1000 in Spirit airline and its a connecting flight. Return time is Afternoon.

USER: Ok, please proceed for further.

ASSISTANT: Your ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thanks for availing us.

USER: Welcome.