You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I planned to meet my friend in IAD, can you please help me to book a flight ticket from EWR?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: I prefer to travel on Apr 15 and Apr 17.

ASSISTANT: Do you have any preferences about flight connections?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Do you have any preferences about class?

USER: I would like to depart in afternoon.

ASSISTANT: Please mention your name.

USER: I am Nicole Garcia.

ASSISTANT: The United airlines providing an economy class flight with price 200 and the connections 1. The Departure time is 18:00 hours. Shall I confirm your ticket?

USER: Proceed for booking.

ASSISTANT: Your ticket is booked. The flight number is 1007.

USER: Thank you.

ASSISTANT: Welcome, have a great day.