You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Could you help me in booking a flight ticket from EWR to PHX?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My departure day is Aug 02, return day is Aug 04.

ASSISTANT: Do you need any specifications?

USER: I want normal cost airline. And I want a flight with one connection.

ASSISTANT: Can I know your other preferences?

USER: I do not have any other preferences.

ASSISTANT: Can I know your name please?

USER: David Robinson.

ASSISTANT: There is a flight with connection 1 and price 200, can I proceed?

USER: Ok, proceed to booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1019.

USER: Thank you.