Hello. Myself George Lee.
user
Hello, how may I help you today?
assistant
I need to travel Wasington DC, can you please reserve flight ticket from DTW and DCA?
user
Sure, do you prefer a stopover in between your journey?
assistant
Yes, I need a connecting flight for my journey.
user
Could you please share your planned travel dates?
assistant
My travelling dates are Apr,25 and Apr,27.
user
Is there any class preference?
assistant
I don't need any class requirement.
user
Do you have any other preferences?
assistant
My depart time should be in the evening.
user
Ok, please wait for  a couple of minutes.
assistant
Sure.
user
Sorry, no flights are available as per your requirements.
assistant
That's ok, I will make alternate arrangements to reach my destination.
user
Ok.
assistant
Thank you for searching the flights.
user
Thank you for oping us.
assistant