You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: Please help me out in booking the ticket from DEN to IAD.

ASSISTANT: Sure, may I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Let me know your travelling dates.

USER: My trip dates will be Jun 13 to Jun 15.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: Kevin King is my name.

ASSISTANT: We found a Frontier airline, flight number: 1012, price: 200 with one connection.

USER: Please proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.