Hello. Myself Jonathan Mitchell.
user
Hello. How can I assist you?
assistant
I want to fly from IAD to DFW in the month of May. I prefer to travel from 05/31 to 06/02 dates. Can you please book a flight ticket for the above details?
user
Ok, give me a minute? I am sorry to  inform there is no flight found.
assistant
Ok, no problem.
user
Thank you for contacting us.
assistant
Thank you for the information.
user