You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in booking the flight ticket from DCA to ATL?

ASSISTANT: Sure, can I know your good name please?

USER: Barbara Baker.

ASSISTANT:  When you are willing to travel?

USER: My travel dates are May 3 and May 5.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: I need a single connection flight.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Not an issue, Thank you for the information.

ASSISTANT: Thank you for opting us.