Hello.
user
Hello, How may I  support you?
assistant
I am planning to visit Washington, can you book a ticket for me?
user
Can you please provide you travelling codes  and dates?
assistant
I want to book a ticket from IAH to DCA. My travel dates are 05/31 & 06/02.
user
May I know your name?
assistant
My name is Melissa Hill.
user
We have found a flight which matches your requirements.
assistant
OK, book it.
user
The details are  flight number :  1008 and flight name : AA. Price : 100 and connections : 0. Your booking is done.
assistant
Thank you for booking.
user
Thank you, Have a safe journey.
assistant