You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I guide you at this moment?

USER: I have to attend a concert at Las Vegas, can you please help me to book the flight ticket from OAK to LAS?

ASSISTANT: Sure, can you please provide your planned dates of journey to proceed further?

USER: I will depart on 01/31 and return back on 02/02.

ASSISTANT: Meanwhile, please provide your name.

USER: My name is Timothy Johnson.

ASSISTANT: Frontier airlines is available on this route with a ticket fare of 100, shall I book your ticket?

USER: That's ok, you can book the ticket.

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

USER: Thank you very much for your help.

ASSISTANT: Thank you, have a safe journey.