Hi,. I am David Lopez.
Hello, how can I assist you today?
I need to attend the seminar on nano technologies in Washington, DCA.
Ok.
Could you be my helping hand in booking me a plane on 01/13?
Sure, I would be happy to help you.
Thank you.
  Let me know the airport code that you wish to fly from.
My airport to board is New York, JFK.
 Do you need lay by in between your journey?
I am comfortable to travel in any flight.
Can you please ensure your arrival date?
I will return on 01/15.
Ok, please wait a moment, let me search a flight for you.
Sure.
Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.
Ok, I will choose other airline,.
Ok.
Thank you for quick response.
Thank you for reaching us.