You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: I want to fly on Sept 23 and return on Sept 25.

ASSISTANT: Let me know your connection limit.

USER: I need a single connection.

ASSISTANT: Do you have any specification?

USER: No.

ASSISTANT: Here, I found a flight for you with 1 stopover in economy class and it costs you 200. Can I proceed for further?

USER: You can proceed to booking.

ASSISTANT: Your booking is done with flight 1009 in Frontier airlines.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a safe flight.