Hi,.
user
Hello.
assistant
I am Cynthia Campbell.
user
 Cynthia Campbell, how can I be at your service?
assistant
Could you please book a flight ticket to San Francisco, SFO as I want to attend a beer festival?
user
Sure, kindly mention your journey dates.
assistant
I would like to travel on 08/21 and return on 08/23.
user
What is your boarding point?
assistant
My boarding point is Washington, DCA.
user
Unfortunately, there are no flights for you.
assistant
No problem, thank you for the information.
user
Thank you for connecting us.
assistant