Jack Johnson here.
user
Hello. How can I be of service to you?
assistant
I want to attend my finale round of interview, so could you please help me to book a flight from WA-SEA and DC-DCA.
user
Jack, can you please help me with your travelling dates?
assistant
My departure date is 02/16 and return date is 02/18. Make sure my price limit is 500 and the connections limit is 1.
user
Sorry to say that there is no flight  found.
assistant
Thank you for the information.
user
Thank you for your positive response.
assistant