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