Hello.
user
Hello. How may I assist you today?
assistant
I want to visit Boston, can you book a ticket from IAD to BOS?
user
May I know your travel dates?
assistant
My travel dates are 07/29 and 07/31.
user
May I know your name to proceed further?
assistant
My name is Justin Johnson.
user
Based on your request, there is no flight. Sorry for this inconvenience.
assistant
No issues.
user
Thanks for contacting us.
assistant
Welcome.
user