You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. how can I assist you today?

USER: I am planning to visit  Washington, will you help me in booking the flight ticket from DFW to DCA?

ASSISTANT: Ok, please can I know your name to book?

USER: Myself Ronald White.

ASSISTANT: Ok, please can I know your dates of journey?

USER: My travelling dates are Mar 03 and Mar 05.

ASSISTANT: Ok, please let me know if there is any preferred connection limit.

USER: I need a flight with single connection.

ASSISTANT: Sorry as per the specification you have mentioned above there are no flights available.

USER: You can check with business class which departs in morning time..

ASSISTANT: No, there are no flights available as per those intents.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Ok, thank you for availing our service.