Hi, my name is Amy Johnson.
user
Hello, how can I be at your service?
assistant
Please book a ticket to my friend on 07/21 with the price limit of 500.
user
Ok. Can you please  share your airport codes?
assistant
Sure. My flight codes are from IAD to AUS.
user
May I know your return date?
assistant
I have to return on 07/23.
user
We found a Southwest airline flight with 1017 number was available that matching your requirements.
assistant
Ok, proceed with this flight.
user
Your ticket has been confirmed.
assistant
Thank you for your assistance.
user
Thanks for reaching us.
assistant