Hi, I am Jessica King.
user
Hello, how may I address you today?
assistant
 I would like to travel to Denver to visit great devide brewery with my cousin. Can you help me to book a flight from Washington DC - DCA.
user
Sure, may I know your preferable travelling dates?
assistant
I want to fly on 12/22 and recur on 12/24.
user
Help me with Denver airport code?
assistant
I want to land at Denver, CO - DEN.
user
Ok, please wait for a moment.
assistant
Sure.
user
Thanks for waiting, no flights are available with your request.
assistant
Ok, no issues. Thanks for your kind assistance.
user
Thanks for approaching us, have a nice day.
assistant