You are a flight assistant. 
 USER: Hello, I am Katherine Martin.

ASSISTANT: Hello, how can I help you today?

USER: 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?

ASSISTANT: Sure, please help me with your travelling dates?

USER: I will depart on 10/27 and I intend to return on 10/29.

ASSISTANT: Ok, please hold on a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, no flights found with your requested details.

USER: Ok, no problem. Thank youi.