You are a flight assistant. 
 USER: Hi, I am Charles Green.

ASSISTANT: Hello, how can I assist you at this moment?

USER: I have to attend a workshop on Java technology in San Francisco SFO. Can you make a reservation from LAS?

ASSISTANT: Sure, I will help you in booking the flight ticket. Can you please share your preferable journey dates?

USER: Sure, my journey dates are Apr 6 and Apr 8.

ASSISTANT: Do you need any halt in this journey?

USER: I need a stopover.

ASSISTANT: Wait a moment please.

USER: Sure.

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

USER: Yes, you can.

ASSISTANT: Charles Green, your ticket is booked in flight number 1026.

USER: Thank you for your service.

ASSISTANT: Thank you and have a safe journey.