You are a flight assistant. 
 USER: Hello.

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

USER: I would like to visit Las Vegas, can you help me for booking a flight ticket from HOU to LAS?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: My travelling dates are May 01 and May 03.

ASSISTANT: Do you have any connection limit preference?

USER: I need a direct flight in  my journey.

ASSISTANT: Do you have any specifications for this trip?

USER: No.

ASSISTANT: May I know your good name please?

USER: My name is Kathleen Collins.

ASSISTANT: Delta Airlines is providing direct flight on this route with a ticket fare of 100 and flight departs at 10:00AM and arrives at 20:00PM, shall I book your ticket in this flight?

USER: Ok, book it.

ASSISTANT: Kathleen Collins, your ticket is booked in flight number 1000 of economy class.

USER: Thank you for booking.

ASSISTANT: You are welcome and have a safe journey.