Hi,.
Hello. How can I help you?
I am Cynthia Lee.
Ok, what can I do for you Lee?
Please book a ticket from Denver, CO-DEN to San Francisco, CA-SFO, for culture, heritage and folk festival.
Ok, may I know your travelling dates?
Intended travelling dates are 06/24 to 06/26.
 Please mention your price limit?
Price limit is 500.
Sorry , there are no flights available according to  your details.
Thanks for the help.
Thank you for approaching us.