Hello,.
user
Hello. How may I help you?
assistant
Please could you book a ticket from Washington DC-IAD to Phoenix, AZ-PHX.
user
Ok, mention your dates of travel.
assistant
Depart date is 09/23 and will return by 09/25.
user
I need your name to proceed further.
assistant
My name is Angela Roberts.
user
Sorry, there is no flight for you on your preferable dates.
assistant
Thanks.
user
Thanks for choosing us, have a good day.
assistant