You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Help me in booking a flight from DCA to LGA?

ASSISTANT: Sure, can you please help me with your planned travel dates?

USER: My travelling dates are July 22 to 24.

ASSISTANT: May I know your name please for booking purpose?

USER: I am Brian Jackson.

ASSISTANT: Do you need a connecting flight or a direct flight?

USER: I prefer connection flight.

ASSISTANT: May I know your class preference?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: I don't have.

ASSISTANT: I found an economy class in Frontier airlines with fare 100 and it has single connection. Can I book your ticket?

USER: Proceed for booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1009.

USER: Thank you.

ASSISTANT: Thank you for choosing us.