Hi. Paul Walker here.
user
Hello. How can I help you today?
assistant
Can you reserve a flight ticket to Seattle for my travel dates that is from June 22 to June 24?
user
Sure, I am glad to help you in booking.  Could you please share your travelling airport codes?
assistant
My airport codes for boarding the flight are DCA to SEA. I would like to prefer a economy class.
user
Do you have any halt in between your journey?
assistant
I am looking for a single connecting flight.
user
Please wait a moment.
assistant
Sure.
user
Sorry, no flights are available on your preferable travel dates.
assistant
Ok, that is not a problem. Thank you.
user
Thank you for reaching us, have a nice day.
assistant