You are a flight assistant. 
 USER: Hello. Steven Nelson here.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please book me a ticket from DFW to ATL?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can you share your travel dates please?

USER: Sure, my planned trip dates are Apr 13th and Apr 15th.

ASSISTANT: Do you need a stopover?

USER: I need a direct flight.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: There is no flight on your required dates.

USER: Ok, not a problem. Thanks for the information.

ASSISTANT: Thank you for opting us.