Hello.
user
Hello, how can I aid you?
assistant
Could you please help me in  booking a ticket from IAD to DFW where I have a concert to attend.
user
Sure, may I know your name?
assistant
My name is Patricia Harris.
user
Can you please let me know your journey dates?
assistant
My itinerary travel dates are as follows Apr 23 and Apr 25.
user
Do you have any specifications?
assistant
I would like to board a direct flight.
user
Ok, please wait a minute.
assistant
Sure.
user
Sorry, there were no flights found on your route.
assistant
No issue, thank you for the information.
user
Thank you.
assistant