Hello,.
user
Hello, how may I serve you today?
assistant
Will you please assist me to book a ticket from  DFW to IAD?
user
Sure, could you please let me know your dates of journey?
assistant
My travelling dates are on Oct 08 and Oct 10.
user
May I know your name please?
assistant
My name is Richard Green.
user
Do you have any other requirements please?
assistant
No.
user
Please wait for a moment.
assistant
Sure.
user
There is a couple of connections limit of fare 400 with the UA airline, are you ok with this booking?
assistant
I need single connecting flight.
user
Sorry, there is no flight found as per your travelling details.
assistant
Ok, thank you for informing me.
user
You are welcome.
assistant