You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I am looking for a flight from DFW to DCA, can you please help me in booking?

ASSISTANT: When you are willing to travel?

USER: I will start my journey on Aug 04 and return back on Aug 06.

ASSISTANT: May, I know your good name? Do you have any connection limit?

USER: My name is Kevin Adams. I need a direct flight.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.