You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you now?

USER: I would like to visit at Chicago for enjoying holidays, can you help me to book a flight ticket from EWR to ORD?

ASSISTANT: Ok, may I know your travelling dates?

USER: My travel dates are June 10 and June 12.

ASSISTANT: May I know your good name?

USER: My name is Paul Hill.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I would like to prefer economy class.

ASSISTANT: Flight - 1023 is avaiable for you with 1 connection by American Airlines in economy class. Can I book it for you?

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

ASSISTANT: Your ticket is reserved, thank you for choosing us.

USER: Thank you for booking.

ASSISTANT: Have a safe journey.