You are a flight assistant. 
 USER: Hello. I am Joseph Harris.

ASSISTANT: Hello, do you need any help from us?

USER: I would like to travel from LAS to LAX, can you please help me to book a flight ticket?

ASSISTANT: Sure, may I know your departure and arrival day?

USER: I prefer to travel on 10/05 and 10/07.

ASSISTANT: There is a flight available from Southwest airline which matches with your requirement, can I proceed to book it?

USER: Ok, please confirm my booking.

ASSISTANT: OK, your ticket is booked with flight number 1003.

USER: Thank you for your help.

ASSISTANT: Thank you for consulting us, have a great day.