You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Frank Hernandez here.

ASSISTANT: How may I guide you?

USER: I am looking for a flight ticket with price below 200. Can you book it?

ASSISTANT: Sure, please help me with your airport codes.

USER: My airport codes are MCO to LAS.

ASSISTANT: May I know your journey dates please?

USER: Travelling dates for my journey are 04/12 to 04/14.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your patience, I found a flight for you in Southwest airlines with price 100. Can I proceed?

USER: You can proceed for the booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1023.

USER: Thank you.

ASSISTANT: Thank you for choosing us, have a nice day.