You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,.

USER: I am Ronald Wilson.

ASSISTANT: How may I aid you?

USER: I want to book a flight ticket to attend Auto Show in San Francisco, CA - SFO. Can you please book a flight ticket from Washington, DC - DCA?

ASSISTANT: Sure, help me with the trip dates?

USER: I want to travel on 08/15 and need to catch return flight on 08/17.

ASSISTANT: We found a flight in an airline Southwest with 1008 having a single connection price of 200. Shall I reserve?

USER: Please reserve my seat.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.