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