You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: I am Cynthia Campbell.

ASSISTANT:  Cynthia Campbell, how can I be at your service?

USER: Could you please book a flight ticket to San Francisco, SFO as I want to attend a beer festival?

ASSISTANT: Sure, kindly mention your journey dates.

USER: I would like to travel on 08/21 and return on 08/23.

ASSISTANT: What is your boarding point?

USER: My boarding point is Washington, DCA.

ASSISTANT: Unfortunately, there are no flights for you.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for connecting us.