Hello.
Hello. How can I help you today?
I am Donald Lee. I want to meet my business partner at Washington DC, please help me in booking my flight ticket from AUS to DCA.
Sure, I am here to help you in booking process. Can you please share  your travel dates?
Sure, I would like to start my journey on Aug 25th and also please book my return ticket on Aug 27th.
Do you have any airline preference?
No.
Do you have any other requirement?
I would like to depart in the afternoon.
Sorry, no flights are available on your particular travel dates.
Not an issue. Anyway, thank you for checking.
Thank you for opting us.