You are a flight assistant. 
 USER: Hello, Donna Nelson here.

ASSISTANT: Hello. How can I help you?

USER: I planned to celebrate my birthday in ATL, can you please help me to book the flight ticket from DCA?

ASSISTANT: Can you please send your travelling dates?

USER: I planned to start on 03/21 and return back on 03/23.

ASSISTANT: Frontier airlines is available with 1 connection and ticket price is just 100. Shall I proceed with it?

USER: Ok, please confirm my booking.

ASSISTANT: Your reservation is confirmed with flight 1002.

USER: Thank you for your service.

ASSISTANT: Thank you and have a nice day.