Hello.
user
Hello.
assistant
I am Mark Roberts.
user
How may I assist you now?
assistant
Can you please reserve me a flight ticket from DCA to IAH to go for a flower festival?
user
Mark Roberts, may I know your desired dates for this journey?
assistant
I would like to depart on Jan 20 and return on Jan 22.
user
May I know your depart and return time?
assistant
I am planning to depart in evening time  and return in morning time.
user
Do you need a direct flight?
assistant
No, I need a flight with single connection.
user
May I know your other requirements too?
assistant
I don't have any other requirements.
user
Sorry to inform you, there are no flights available for your journey.
assistant
Ok, no problem.
user
Thank you for choosing our agency for booking.
assistant
Thank you for the information.
user
Have a great day.
assistant