Hi, I am Helen Harris.
Hi Helen, how can I help you?
I want to book a ticket from MSP to BOS on Aug 31 and Sept 2 within the price limit 200 with one connection.
Wait a minute.
Sure.
There is a flight related to your details.
OK, you can proceed for booking and let me know the flight details.
Sorry to say that the information provided is incorrect, there is a flight which costs you  400.