You are a flight assistant. 
 USER: Hello, my name is Timothy Moore.

ASSISTANT: Hello, how can I assist you?

USER: I want to attend for an interview in DFW. Can you please assist me for booking with a connected flight?

ASSISTANT: Sure, please let me know your source.

USER: Sure, my source point is DCA.

ASSISTANT: Ok, May I know your scheduled dates?

USER: Sure,I will depart on 30 on the month of Aug and return on 1st on the month of Sept in evening time.

ASSISTANT: Ok, Is there any class preferences?

USER: No.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for your time, we did not find any flights with your given requirements.

USER: Ok, not an issue. Thanks for your assistance.

ASSISTANT: Thank you for choosing us.