Hello.
user
Hello. How may I help you out?
assistant
I am Mary Hernandez. I am planning to visit Olympic National Park at Washington, could you please help me with booking a flight ticket from OAK to DCA?
user
Sure, I will help you in booking the ticket. May I know your travelling dates please?
assistant
I would like to take off on 10/05 and return on 10/07.
user
Sorry, there are no flights found in our database.
assistant
That's ok, I will find an another alternate way to complete my trip. Anyways, thank you for the information.
user
Thank you for choosing us.
assistant