Hello, I am Charles Brown.
user
Hello, how can I help you today?
assistant
Can you please book me a ticket with direct flight?
user
Sure, Kindly mention your travel dates?
assistant
I would like to leave between 05/21 and 05/23.
user
May I know your airport codes?
assistant
My airport codes are from DEN to IAD.
user
Ok, please wait a moment.
assistant
OK.
user
Sorry to say, no flight found with your requirement.
assistant
Ok, no problem.
user
Thanks for reaching us, have a good day.
assistant