Hello.
user
Hello, how may I help you?
assistant
Emily Evans here. I want to attend a Seminar in Washington. Can you please help me for booking the flight ticket?
user
Sure, can you please share your journey dates that you prefer to travel?
assistant
My travelling dates are 09/28 and 09/30.
user
Could you please help me with providing your corresponding airport codes?
assistant
My airport codes are PHL and IAD. I want to departure on evening.
user
Do you have any other requirements?
assistant
I want to travel in single connecting flight.
user
 Thank you for waiting, we are sorry to inform you that, there is no flights are available on your mentioned details.
assistant
Anyway, thanks for the information.
user
Thank you.
assistant