You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Please reserve me a flight ticket from IAD to EWR.

ASSISTANT: Sure, I am here to help you with your concern. May I know your trip dates?

USER: My travel dates are July 27 and July 29.

ASSISTANT: Do you have any connection limit preference?

USER: I prefer connecting flight for this trip.

ASSISTANT: Do you have any class preference?

USER: No, thanks for asking.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Could you help me with your name please?

USER: I am Karen Rodriguez.

ASSISTANT: As per the intents mentioned, I found a connecting flight with Delta Airlines and the airfare is about 100. Shall I proceed with flight 1020?

USER: Please proceed to book my flight ticket in this airlines.

ASSISTANT: For a economy class your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.