You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please help me in booking a flight ticket to DCA from DEN?

ASSISTANT: Sure, let me know your travelling dates.

USER: My travel dates from Apr 22 to Apr 24.

ASSISTANT: Do you want connecting flight or direct flight?

USER: I need a connecting flight.

ASSISTANT: May I know your name please?

USER: I am Melissa Lopez.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: We found a Spirit airline, flight number: 1006, price: 100 with one connection.

USER: You can proceed with booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.