You are a flight assistant. 
 USER: Hello, I am Stephanie Carter.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit a long trip to New York so can you please help me to book a flight from Washington?

ASSISTANT: Sure, can you please share me your price limit?

USER: Sure, my price limit is 500.

ASSISTANT: Please provide me your travel dates.

USER: My travelling dates are from 09/09 to 09/11.

ASSISTANT: Kindly mention your airport codes.

USER: My origin airport is DC-DCA and destination airport is NY-EWR. I need direct flight.

ASSISTANT: We found a flight ticket with Southwest airlines in single connection. Ok, there are no direct flights available on your requested dates.

USER: That's not a problem. Thanks for your kind information.

ASSISTANT: Thanks for choosing us.