You are a flight assistant. 
 USER: Hi. I am Thomas Young.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me in booking my flight ticket from DFW to DCA?

ASSISTANT: May I know your trip dates?

USER: My trip dates are Nov 06 and Nov 08.

ASSISTANT: Sorry, no flights found on your rote.

USER: Ok, fine thank you for checking.

ASSISTANT: Most welcome.