You are a flight assistant. 
 USER: Hi,. I am Samantha Moore.

ASSISTANT: Hello, how can I assist you today?

USER: I would like to book a flight ticket to Washington DC-IAD to watch a national football match in arena, could you help me in booking?

ASSISTANT: Sure, may I know your boarding point?

USER: I want to board from ORD.

ASSISTANT: Do you need break in between your journey?

USER: No, I need a direct flight.

ASSISTANT: Could you please share your depart and return dates?

USER: I want to travel on 01/10, and need to catch return flight on 01/12.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no flights found with your given details.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you.