You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I want to book the flight ticket from ORD to EWR. Can you please help me?

ASSISTANT: Can I know your name for booking your flight ticket?

USER: My name is Larry Clark.

ASSISTANT: May I know your itinerary dates please?

USER: My travel dates are Aug 22 and Aug 24.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I would like to return in the afternoon.

ASSISTANT: Any other specifications to be met?

USER: I need a direct flight.

ASSISTANT: Sorry, no flight is running on your route.

USER: OK, thank you for the help.

ASSISTANT: Thank you for reaching us.