Hi.
user
Hello, how may I assist you?
assistant
I want to attend a conference in Boston, can you book a ticket from DCA to BOS?
user
May I know your travelling dates?
assistant
My trip dates are 03/27 and 03/29.
user
May I know your name?
assistant
My name is Ruth Walker.
user
Sorry. There is no flight as per your requests.
assistant
No problem. Thank you for searching.
user
Thank you for choosing us, have a nice day.
assistant