Hi,.
Hello, how can I aid you?
I am Margaret Williams, I want to book a flight ticket to Dallas to vist zoo. Please help me with a direct flight.
Sure, I am here to help you. Please help me with your travelling dates.
My travelling dates are from 03/23 to 03/25.
Ok, could you please share your journey codes to proceed further?
My source code is IAD and DEst code is DFW.
Wait a minute please.
Ok.
Thank you for reaching us, sorry to say no flights found with your details.
No problem, thank you.
Thank you for reaching us, have  a nice day.