Hello.
user
Hello. How may I assist you today?
assistant
Myself Steven Phillips. I have to attend a  business meeting in Boston, can you please book a flight ticket from DCA airport?
user
Sure, I will help you. Could you please provide your preferable dates that you want to travel?
assistant
Thanks, my departure date is 08/03 and please book my return ticket also on 08/05.
user
Ok, may I know your destination airport code to proceed further?
assistant
Sure, my destination airport is BOS.
user
Please wait a moment to check the availability of flights.
assistant
Ok.
user
Sorry to inform you that, there are no flights moving to your travelling with your requested dates of travelling.
assistant
It's ok no problem, I will go with another airline. Thank you for your information.
user
Thank you for approaching us, have a great day.
assistant