Hi.
Hello, How can I best serve you today?
Could you please help me to book a flight ticket from DCA to IAH?
Sure, can you please mention your depart and arrival dates of your journey?
My trip dates are Jan 22 and Jan 24.
Do you like to go with a connecting or direct flight?
I need  a direct flight.
Can I know your good name to proceed further?
I am Pamela Edwards.
Sorry, no flights are available in this route as per your requested dates.
Not a problem, thank you for the information.
Thank you for choosing us.