You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you today?

USER: I am Margaret Campbell. I want to book a flight ticket from NY - JFK to NV - LAS to attend an interview in Las Vegas.

ASSISTANT: Sure, may I know your travelling dates?

USER: I will start on 07/25, return on 07/27.

ASSISTANT: Do you need any halt?

USER: Yes, I need a halt.

ASSISTANT: Thanks for your details, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a flight in 1017 AA airline with a fare of 200 which matches to your details. Can I proceed?

USER: You can proceed to booking.

ASSISTANT: Sure, your ticket has been booked with a halt.

USER: Thank you.

ASSISTANT: Thank you for reaching our service.