You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you please help me to book a flight from LAS to DFW?

ASSISTANT: Please provide your journey dates.

USER: Sure, I want to travel on Apr 19 and need to return on Apr 21.

ASSISTANT: Do you need any connection limit?

USER: I am looking for a flight with single connection.

ASSISTANT: Are there any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: Lisa Nelson here.

ASSISTANT: Southwest Airlines is providing connecting flight on this route with a ticket fare of 200 and flight departs at 13:00 hours and arrives at 21:00 hours, shall I book your ticket in this flight?

USER: Ok, please proceed.

ASSISTANT: Your ticket is confirmed in flight 1006.

USER: Thank you.

ASSISTANT: Thank you for opting us.