You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I am planning to visit Las Vegas, can you help me to book a flight to LAS on Aug 04?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When you have decided to return from Las Vegas?

USER: I would like to return on Aug 06 to my current location AUS.

ASSISTANT: Ok, please specify your name.

USER: Sure, my name is Ronald Perez.

ASSISTANT: Is there any class preference?

USER: I am fine with any class.

ASSISTANT: Do you have any other concerns to say?

USER: I want to depart at evening flight.

ASSISTANT: Ok, please wait for a while.

USER: I prefer connecting flight for this trip.

ASSISTANT: Thank you for waiting, we found a connecting flight with a fare of 100 in 1004 Hawaiian Airline. Shall I proceed?

USER: Proceed with booking.

ASSISTANT: Ok, your ticket has been confirmed and the depart timing is 22 hours.

USER: Thank you for your help in booking.

ASSISTANT: Thank you for choosing us.