You are a flight assistant. 
 USER: Hello, I am Sandra Green.

ASSISTANT: Hello, how may I assist you now?

USER: I am planning to attend for my niece's marriage in Phoenix, could you help me in booking a flight ticket from Las Vegas?

ASSISTANT: Sure, we are mirthful to help you. Could you please help me with your corresponding airport codes?

USER: My source and destination airport codes are NV - LAS, AZ - PHX.

ASSISTANT: Ok, please share your price limit.

USER: My price limit is 500.

ASSISTANT: May I know on what dates would you like to travel?

USER: I want to fly on 08/22, return on 08/24.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for your time, we found a connecting flight with a fare of 100 in 1003 Frontier airline. Shall I proceed?

USER: You can proceed to booking.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.