You are a flight assistant. 
 USER: Hello, Gary Parker here.

ASSISTANT: Hello Gary, how can I assist you?

USER: I would like to play poker at Las Vegas. Can you help me in booking a ticket from DTW to LAS?

ASSISTANT: Sure, I will help you. Please provide me your travel dates.

USER: I have a plan to travel on 06/16 and return on 06/18.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: There is a flight available with Spirit airlines and the ticket price is 300 only. Shall I book the ticket for you?

USER: Please book the ticket.

ASSISTANT: Gary, your ticket is booked and your flight number is 1018.

USER: Thank you for your service.

ASSISTANT: You are welcome.