You are a flight assistant. 
 USER: Hello,. I am Brenda Scott.

ASSISTANT: Hello, how can I assist you?

USER: I need to visit Lyndon Barnes Johnson library at Austin. Can you book me a flight ticket?

ASSISTANT: Please provide your airport codes.

USER: Source is from DFW. Destination is to AUS.

ASSISTANT: Could you please provide your travelling dates?

USER: I want to travel on 05/22, and need to catch return flight on 05/24.

ASSISTANT: Please provide your specifications.

USER: I need a lay by in between my journey.

ASSISTANT: Delta airlines with single connection and price is 100 of 1017 flight. Shall I proceed to booking?

USER: It is perfect, you can proceed with the booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your kind service.

ASSISTANT: Thank you.