Hello.
Hello, how can I assist you for the day?
I am Jonathan Jones, help me to book a direct flight to Washington city to visit National Museum of  Natural History with my family.
Sure, I am here to help you. When you are willing to travel?
I plan to travel on 06/21 and return on 06/23.
Can you help me with your airport codes?
My source point is TX-DFW and destination is DC-IAD.
Please wait for a moment.
Sure.
Sorry, we found no flights on your given dates.
Ok, thanks for the details.
Thank you for reaching us.