Hi. Charles Carter here.
Hello, Please inform me, By what way, can I help you out?
I want to book a flight ticket from DCA to DTW. Can you help me in that?
Sure, we are  perky to assist you.
Thank you.
Please notify me your journey dates.
I will fly on May 18 and return on May 20.
Ok, please wait for a while.
Sure.
There is a connecting flight found in UA airline of flight number 1007 and fare is 100. Shall I proceed for booking?
You can proceed for booking.
Your ticket has been reserved.
Thank you for your help.
Thanks for reaching us, we hope to assist you again.