Hello. I am Robert Young.
user
Hello, how may I help you today?
assistant
I would like to meet my grand parents at Washington on May 25. Could you please help me with booking a return  flight ticket on May 27?
user
Sure, may I know your airport codes?
assistant
Sure, I intend to board from DEN and land at IAD.
user
Ok, please wait for a while.
assistant
Sure.
user
We found a Southwest airline of flight number 1006 having a halt with fare 100. Shall I proceed to book?
assistant
You can proceed with booking.
user
Your booking has been confirmed.
assistant
Thank you for your help.
user
Thank you for choosing us.
assistant