You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Dennis Wilson.

ASSISTANT: How can I help you at this moment?

USER: I want to book a flight ticket from DTW to PHX. Please help me in booking a flight ticket.

ASSISTANT: Sure, I will help you with this. Can you please provide your journey dates?

USER: Sure, my trip dates are from 04/20 to 04/22.

ASSISTANT: Do you have any specifications to be met for this trip?

USER: I need a halt in between my journey.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Delta airlines is providing direct flight service on this route with a ticket fare of 200, shall I book your ticket?

USER: Please proceed for booking.

ASSISTANT: Dennis Wilson, your ticket is booked in flight number 1000.

USER: Thank you for booking.

ASSISTANT: Thank you and have a safe journey.