Hello,.
user
Hello, how may I aid you?
assistant
I am Rachel Wilson. I want to book a flight ticket to attend my sister's marriage.
user
Sure, I can do that for you. May I know your journey details?
assistant
My travelling dates are from 02/18 to 02/20 and my origin airport is Philadelphia, PA- PHL to  Austin, TX- AUS.
user
Sorry for the inconvenience, We did not find any flights matching your particulars.
assistant
Ok, no problem. Thank you for the information.
user
Thank you for choosing us.
assistant