Hello.
Hello, how may I assist you for today?
Can you book a flight ticket from OAK to DEN?
Sure, could you please provide your travelling dates?
The starting date is 01/31 and the returning date is 02/02.
Sorry to say, no flights were found on your dates.
It's ok, thank you for  searching.
May I know your name for documentation purpose?
Ok, my name is Nicole Davis.
Thank you for choosing us, have a nice day.