Hello.
user
Hello, how can I aid you?
assistant
This is Cynthia Martin, can you help me to book a flight ticket from DCA to HOU?
user
Sure, can you share your trip dates?
assistant
My preferable journey dates are Oct 19 and Oct 21.
user
Do you have any preferences?
assistant
I would like to depart in the afternoon time.
user
Sorry, there is no flight on your given dates.
assistant
No problem, thank you for the information.
user
Thank you for reaching us.
assistant