Hello.
user
Hello, how may I assist you?
assistant
Myself Andrew Nelson.
user
Hi Nelson.
assistant
I want to travel from  BOS to DCA to attend seminar, please help me for booking flight ticket.
user
May I know your preferable dates of travelling?
assistant
My travelling dates from 06/16 to 06/18. Make sure that connection limit is 1 and price limit is 200.
user
Sorry to inform you that there is no flight matching with your requested dates.
assistant
Ok,. Thank you.
user
Thank you for choosing our service, have a nice day.
assistant