Hello.
user
Hello, how may I help you?
assistant
I would like to travel from DCA to DEN for my conference meeting. Can you please search a flight for me in economy class?
user
Sure, may I know your trip dates please?
assistant
My trip dates are from 07/18 to 07/20.
user
Do you have any airline preference?
assistant
My airline preference is normal cost airline.
user
Do you have any other requirements?
assistant
Yes, make sure this my departing time should be in the afternoon with 1 connection.
user
Ok, can I know your name please?
assistant
Sure, myself Andrew Johnson.
user
Sorry, we regret to inform you that there is no flight available as per your request.
assistant
It's ok, thank you for searching.
user
Most welcome.
assistant