You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Myself Kevin Johnson. I am planning to meet my friend at Las Vegas, will you help em in booking the flight ticket from ORD to LAS?

ASSISTANT: Sure, can you share your trip dates?

USER: My travelling dates are Dec 16 and Dec 18.

ASSISTANT: Do you have any preferences?

USER: I need a flight with single connection.

ASSISTANT: Give me a minute. There is a connecting flight with number 1006 in airline UA, the fare is 200 in economy class. Can I book it?

USER: Sure, you can proceed with the booking.

ASSISTANT: Your ticket is reserved.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.