Hello.
user
Hello. How can I help you?
assistant
Anthony Harris here. Will you find a flight from IAD to OAK?
user
Sure, on which dates you like to travel.
assistant
My departure date is 10/21 and return date is 10/23.
user
I am sorry, no flights found on your dates.
assistant
Anyway, thank you for the information.
user
Thank you for choosing us.
assistant