Hello, I am Katherine Martin.
user
Hello, how can I help you today?
assistant
I want to book a flight ticket from New York, NY-EWR to  attend Grand Canyon Adventure  at Austin, TX-AUS. Can you help me in booking?
user
Sure, please help me with your travelling dates?
assistant
I will depart on 10/27 and I intend to return on 10/29.
user
Ok, please hold on a moment.
assistant
Ok.
user
Thanks for waiting, no flights found with your requested details.
assistant
Ok, no problem. Thank youi.
user