You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, May I know what kind of service you are looking for?

USER: I would like to prefer a normal-cost airline for my business trip to Las Vegas. So can you book the flight ticket for me?

ASSISTANT: Sure, I am gleeful to assist you. May I know on what dates would you like to travel?

USER: The travel dates are from Mar 20 to Mar 22.

ASSISTANT: Please help me with code of the airport where you want to start.

USER: My airport codes are from SFO to LAS.

ASSISTANT: Do you prefer any way station in between journey?

USER: That does not matter.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I would like to depart in the afternoon time.

ASSISTANT: Give me a minute, I will check and let you know the flight availability.

USER: Ok.

ASSISTANT: Thanks for waiting, we are pleased to inform you that, we have found American airline, flight number 1007, 1 stopover and the ticket fare is 200. Would you like me to book the ticket?

USER: I am fine with the airlines. You can book it.

ASSISTANT: Sure, for that I need to know your name. Can you please provide me?

USER: I am Jonathan Lewis.

ASSISTANT: Ok, I have reserved your ticket with economy class and the departing time is afternoon.

USER: Thank you.

ASSISTANT: Thank you, For making us to serve you regarding ticket booking.