Hello.
user
Hello, how may I help you?
assistant
I am Brenda Baker, can you reserve a ticket from Washington, IAD to Las Vegas, LAS.
user
Sure, let me know your preferable dates?
assistant
My travelling dates are on 06/29 and 07/01.
user
Sorry, there are no flights available for given schedule.
assistant
Ok, thank you for informing me.
user
Thank you for reaching us, have a good day.
assistant