You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you now?

USER: Can you please help me in booking my flight ticket from ORD to DCA?

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your travelling dates?

USER: My travelling dates are Feb 09 and Feb 11.

ASSISTANT: Do you have any connection limit?

USER: I need direct flight.

ASSISTANT: May I know your name to book the flight ticket?

USER: Myself Helen Gonzalez.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: We regret to inform you that, there are no flights moving to your region with your requested dates of travelling.

USER: Thank you for your information.

ASSISTANT: Thank you for contacting us, have a great day.