You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

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

ASSISTANT: Sure, may I know your travel dates?

USER: My trip dates are Apr 12 and Apr 14.

ASSISTANT: Please share me your name.

USER: Sandra Lopez here.

ASSISTANT: Do you have any specifications?

USER: I prefer for connecting flight.

ASSISTANT: We found a economy class flight with Spirit airline, flight number: 1007. Shall I book this ticket?

USER: Please proceed for booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you.