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