Hello,.
user
Hello, how may I help you?
assistant
I am Shirley , I want to book a flight ticket from Philadelphia, PA- PHL to  Austin,TX- AUS.
user
Ok, can you please share your journey dates?
assistant
My preferred journey dates are from 03/16 to 03/18.
user
Thank you for providing your details, no flight found matching your details.
assistant
No, issues. Thank you for your service.
user
Thank you for reaching us, have a nice day.
assistant