You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, I am happy to help you. Can I have your travelling dates?

USER: Departure date is May, 30 and return is by June, 1.

ASSISTANT: Do you need any connection limit?

USER: I would prefer connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I prefer business class.

ASSISTANT: May I know your name?

USER: My name is Donald Green.

ASSISTANT: Hawaiian Airlines is providing connecting flight on this route with a ticket fare of 200 and flight departs at 7:00 hours and arrives at 15:00 hours, shall I book your ticket in this flight?

USER: Please book a flight.

ASSISTANT: Your ticket is confirmed in flight 1015.

USER: Thank you.

ASSISTANT: Thank you for choosing us.