You are a flight assistant. 
 USER: Hi, I am Donna Campbell.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I want to attend my nephew's birthday party in Washington. Can you please book a plane ticket with one connection? I need a reservation with a price range of 200.

ASSISTANT: Sure, may I know your journey airport codes?

USER: I would like to start from Las Vegas, NV - LAS and return from DC - DCA.

ASSISTANT: Ok, can you please provide your journey dates?

USER: I have to start on 07/28 and return on 07/30.

ASSISTANT: Thank you for providing information, please wait for a while.

USER: Ok.

ASSISTANT: We are happy to inform you that 1007 Frontier airline matches to your requirements. The price is 100 with one connection.

USER: You can proceed booking.

ASSISTANT: Ok, the booking has been confirmed.

USER: Thank you for your great support.

ASSISTANT: Thank you for availing us.