Hi.
user
Hello.
assistant
I am Kimberly Davis.
user
How may I help you?
assistant
I am looking for a flight from Oakland, can you help me out in booking flight ticket from OAK to IAD?
user
Sure, I will help you with that. Can I have your travel dates please?
assistant
My trip date are from  Feb 5th till Feb 7th.
user
Sorry, there is no flight for you on your route.
assistant
That's ok, not an issue. Thank you.
user
Thanks for choosing us, have a nice day.
assistant