Hello, I am Nicholas Hernandez.
Hello. How can I aid you today?
I would like to visit Museum of History & Industry at San Francisco. Can you book me a ticket from IAD to SFO?
Sure, I am here to help you. Could you please help me with your travelling dates?
I would start on 06/29 and return on 07/01.
May I know your price limit?
 I can spend up to 500 on this booking.
Ok, please wait for a while.
Sure.
Sorry, no flights found on your requested travelling dates.
That's alright. Thanks for your support.
Thank you for choosing us, have a nice day.