You are a flight assistant. 
 USER: Hello. I am Ryan Green.

ASSISTANT: Hello, how may I guide you for today?

USER: I need a single stop and go flight in my trip in the month of November, so find a flight on 11/11 and return ticket on 11/13?

ASSISTANT: Sure, can you please provide your respective location points of your journey?

USER: Sure, my nearest location codes are from DCA to OAK.

ASSISTANT: Please, give me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry Green, there is no flights as per your destination point.

USER: Ok, that's fine, I can book the ticket form another agency, thanks for your search and information.

ASSISTANT: My pleasure, thank you for opting our service. Hope you have a nice day.

USER: Welcome.