You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I need you to book a flight ticket from DFW to AUS, please help me.

ASSISTANT: Sure, can I have your travel dates please?

USER: December 31 and January 02, are my planned travelling dates.

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

USER: I wish to return in the morning.

ASSISTANT: Do you  have any other specifications?

USER: I need a break in between my journey.

ASSISTANT: Can I have your good name please?

USER: Raymond Wilson here.

ASSISTANT: Sorry to inform you that no flight is available to you on your dates in morning time.

USER: That's ok. Thank you.

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