Hello, Sandra White here.
user
Hello Sandra, how can I aid you today?
assistant
I want to meet my school friend at Dallas, can you please help me to book my flight ticket from AUS to DFW?
user
Please may I know your planned dates of trip?
assistant
Sure, I will depart on 06/21 and return back on 06/23.
user
Ok, give me a minute.
assistant
Sure.
user
Sorry Sandra,  no flights are available for you.
assistant
That's fine, I will find an other way. Thank you for the information.
user
Most welcome, have a nice day.
assistant