Hi, I am Patrick Roberts.
user
Hello, how may I be of your service?
assistant
I need to schedule my holiday trip to Washington DC-DCA to have a fun at water park, can you help me to book a flight ticket from  Denver, CO-DEN?
user
Sure, how much can you afford for the flight ticket?
assistant
I need the ticket with in the fare limit 200.
user
Please let me know your travelling dates.
assistant
My planned travelling dates on 11/09 to 11/11.
user
Ok, please wait a while.
assistant
Ok.
user
Thank you for being patient. There are no flights found according to your request.
assistant
Ok, no problem. Thanks for your information.
user
Thank you for approaching us.
assistant