Hi. I am Frank Lewis.
Hello, In what way can I help you today?
I would like to book a flight ticket to attend a robotic workshop, can you help me to book an economy class ticket?
Sure, when are you planning to start and return on?
I am planning to start on 09/23 and return on 09/25.
Can I know your airport codes?
Airport codes are DCA and PHX.
Do you need a connecting flight?
I need a connecting flight.
May I know your depart and return timings?
I would like to like to depart on afternoon.
Thank you for your details, we found a connecting  flight 1005 in class economy.
You can proceed with booking.
Your ticket has been confirmed with Southwest airline which departs in the afternoon.
Thanks for the help.
Thank you.