You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: Mary Campbell here.

ASSISTANT: Welcome to flight booking agency Mary.

USER: I want to attend an event which is conducted by my friend in Las Vegas. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your preferable departure and return dates of travelling?

USER: Sure, my travelling dates are from 06/29 to 07/01.

ASSISTANT: Ok, may I know your origin and destination airport codes for booking?

USER: My airport codes are from DFW to LAS.

ASSISTANT: Please wait a moment to check the flights availability and I will revert back to you.

USER: Ok, I will wait for your response.

ASSISTANT: Based on your travel details, I have found a flight with a single connection with a fare of 100 from Frontier airlines. If you are ok with this, please inform me to book the flight.

USER: Please proceed for booking the flight ticket.

ASSISTANT: Ok, your ticket has been booked in flight number 1002.

USER: Thanks for helping me.

ASSISTANT: Thank you for using our services, have a great journey.