You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you for the day?

USER: I came to know about the rodeo which is going on at Washington. Can you help me in booking a ticket to Washington, DC - IAD?

ASSISTANT: Sure, I can help you with that. Can you tell me your travel details?

USER: Sure, I will start my journey on 09/30 and return on 10/02. My origin airport code is AUS.

ASSISTANT: May I know your name for further booking process?

USER: Sure, my name is William Moore.

ASSISTANT: I'm sorry to tell you, no results were found for your mentioned details.

USER: Ok, no problem, I will go by another way.

ASSISTANT: Thanks for reaching us, have a great afternoon.

USER: Thank you for checking.

ASSISTANT: You are most welcome William Moore.