Hi.
user
Hello. How can I assist  you?
assistant
I am Frank Brown. I need to book a flight ticket from IAD to DCA, Can you please help me for booking?
user
Sure, can I know your travel dates?
assistant
I would like to travel on 01/07 to 01/09.
user
The flight 1009 of Spirit airlines is available on your requested dates. Shall I proceed?
assistant
Ok, proceed for booking.
user
Frank, your reservation has been done successfully.
assistant
Thanks for your information.
user
You are welcome.
assistant