You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I want to book a ticket from ORD to EWR. Could you book a ticket?

ASSISTANT: Sure, can you please let me know your trip dates?

USER: Trip dates are June, 2 and June, 4.

ASSISTANT: Do you have any connection limit preference?

USER: I would be comfortable with single stop over.

ASSISTANT: Do you have any other specifications?

USER: I prefer to fly in a normal-cost airlines.

ASSISTANT: Could you help me with your name please?

USER: My name is Paul Hernandez.

ASSISTANT: I found a flight with Delta Airlines and the airfare is about 200. Shall I proceed with flight 1000?

USER: Please book a flight.

ASSISTANT: For a economy class your ticket is booked. Thank you for reaching us.