Hello.
Hello.
I am Mark Smith.
How can I help you?
I am planning to visit Denver to meet my brother, can you please find a flight from SFO to DEN?
Sure, May I know your travelling dates?
My travelling dates are 08/30 and 09/01.
Do you have any preferences?
I prefer business class.
Sorry, There are no flights available under business class.
That's ok, thank you for checking.
Thank you.