Hello. I am Raymond Davis.
user
Hello, do you need any help from us?
assistant
Yes, Please help me in booking a flight ticket from DCA to OAK.
user
Sure, could you please share your departure and arrival day?
assistant
Ok, 09/06 and 09/08 are my departure and arrival dates.
user
Ok, please allow me a moment.
assistant
OK.
user
Sorry, there is no flight on your requested travelling dates.
assistant
Ok, no problem. Thanks for the response.
user
You are welcome, have a great day.
assistant