You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: I am Gary Thomas. Can you help me booking a flight ticket from BOS to AUS?

ASSISTANT: Sure Gary Thomas, I am happy to help you with that. Can I have your travel dates please?

USER: I will start on May, 19 and return on May, 21.

ASSISTANT: Ok, please let me know the timings of your journey.

USER: I need to return in the afternoon time.

ASSISTANT: Do you have any other specifications?

USER: I need a direct flight.

ASSISTANT: Sorry Gary Thomas, no direct flight is available to you on your dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us, have a good day.