Hello, I'm Donald Turner.
user
Hello, what can I do for you?
assistant
I want a ticket from OAK to IAD, can you please help me by searching a flight in this route?
user
Let me know your travel dates please?
assistant
I would like to travel on 02/02 and return back on 02/04.
user
Sorry to say, there is no flight to IAD on 02/02, Donald Turner.
assistant
That's ok, thank you.
user
Thanks for reaching us.
assistant