You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Kenneth Lee. I am planning to book a ticket to visit my brother's home at LAS. Can you please help me out to book a ticket from ORD?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I would like to travel on 11/12 and return back on 11/14.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Sure, I will wait for your reply.

ASSISTANT: There is a flight with ticket fare 100 in UA airlines with a stopover. Is it ok for you?

USER: Please proceed the booking.

ASSISTANT: Your booking is confirmed with flight number 1003.

USER: Thank you for your service.

ASSISTANT: Thank you for contacting us, have a nice day.