You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to visit Las Vegas to attend my brothers marriage, can you aid me to book a flight ticket from Oakland?

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

USER: Sure, my planned travel dates are Dec 29 and Dec 31 respectively.

ASSISTANT: Do you have any preferences about flight connections?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Please provide your airport codes that you want to travel.

USER: My airport codes are OAK and LAS.

ASSISTANT: Do you have any preferences about class?

USER: No.

ASSISTANT: Please mention your name.

USER: Myself Ruth Wright.

ASSISTANT: The American airlines providing an economy class flight with price 200 and the connections 1. The departure time is 9:00 hrs and arrival time is 18:00 hrs. Shall I confirm your ticket?

USER: Please confirm my ticket.

ASSISTANT: Your ticket is booked. The flight number is 1018.

USER: Thank you for your help.

ASSISTANT: Welcome, have a great day.