You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can I know what help do you need from us?

USER: I want to book a flight ticket to meet my best friend in Detroit DTW from LAS. Can you find a flight ticket for me?

ASSISTANT: Sure, I will help you to book the ticket. Could you please mention the travel dates?

USER: Thank you, I want to airborne on Mar 21 and return on Mar 23.

ASSISTANT: OK, is there any class preference?

USER: I am ok with any class.

ASSISTANT: Ok, may I know your respective name please?

USER: My name is Gary Hill.

ASSISTANT: Are you ok with connecting flight to travel?

USER: Yes, I need a connecting flight.

ASSISTANT: The Frontier airlines is found in this route which having a single connection and this is an economy class ticket. Are you ok with this flight?

USER: Please confirm the ticket.

ASSISTANT: Ok, I have reserved your ticket with the flight-1013 and the ticket cost is 100.

USER: Thank you for your service.

ASSISTANT: Have a nice journey. Thank you for choosing us.

USER: Welcome.