Hello.
Hello, how can I assist you now?
I am Andrew Scott. Can you please help me to find a flight from DTW to DCA?
Sure Andrew Scott, I am happy to help you with that.  Can I have your travel dates please?
Thank you. I am willing to travel on the dates of July/20 and July/22.
Ok, please let me know the timings of your journey.
The return time of the flight should be in the afternoon.
Ok, do you have any other preferences?
The connection limit of the flight must be at least 1.
Sorry Andrew Scott, no afternoon flight is available to you on your dates.
It's ok, not a problem with that. Thank you for your help.
Thank you for choosing us, have a good day.