Hi.
user
Hello.
assistant
I am Patrick Hall.
user
Hall, how may I aid you?
assistant
I want to book a ticket from DCA to LAX, hope you are help me out.
user
Please provide your trip dates.
assistant
Ok, my trip dates are from 10/18 and 10/20.
user
Sorry, no flight is available on your route.
assistant
It's ok, thanks for checking.
user
Thank you for choosing us.
assistant