Hello.
user
Hello.
assistant
I am Emily Carter.
user
How can I aid you?
assistant
I want to attend an event in San Francisco. Can you help me to book a ticket from DCA to SFO?
user
Sure, may I know your trip dates?
assistant
I want to fly on 12/21 and 12/23.
user
There is  a direct flight with number 1004, the fare is 200 in airline Frontier. Can I book it?
assistant
Proceed to booking.
user
Your ticket is reserved.
assistant
Thank you for your help.
user
Thank you for booking.
assistant