You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you aid me to book a flight ticket from DCA to IAD?

ASSISTANT: May I know your travel dates?

USER: My trip dates are Sep 9 and Sep 11 respectively.

ASSISTANT: Do you prefer connecting flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No other specifications.

ASSISTANT: May I know your good name?

USER: Lisa Green here.

ASSISTANT: We found a flight in an economy class with 1 connection in Spirit airlines and the fare of your flight will be 100. Do you like me to proceed your booking with this flight?

USER: Please proceed.

ASSISTANT: Your booking is done with flight number 1020.

USER: Thank you.

ASSISTANT: Thank you for reaching us.