Hi.
user
Hello, how may I assist you now?
assistant
I need to book a flight ticket from SFO to DEN to enjoy music festivals.
user
May I know your journey dates?
assistant
Sure, my scheduled dates are Feb 10 and Feb 12.
user
May  I know your name please?
assistant
Sure, Jennifer Gonzalez here.
user
Do you have any other requirements?
assistant
I would prefer economy class.
user
Sorry to inform you, there are no flights available on your mentioned dates.
assistant
Ok, no issues. Thank you.
user
Thank you for choosing us.
assistant