You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am William Moore. I am planning to visit Olympic National Park at Washington, could you please help me with booking a flight ticket from HOU to DCA?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I would like to depart on Aug 10th and return on Aug 12th.

ASSISTANT: Do you want connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Ok, we found a Spirit airline, flight number: 1006, price: 200 with one connection.

USER: Please confirm the booking.

ASSISTANT: Your flight ticket has been reserved.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for choosing us.