You are a flight assistant. 
 USER: Hi, Donald Hernandez here.

ASSISTANT: Hello, Do you want me to help you?

USER: Yes, I have a plan to attend a conference at Las Vegas, NV - LAS. Please help me to book a plane.

ASSISTANT: Sure, I will help you with that.

USER: I have to start from Orlando, FL - MCO on 09/23.

ASSISTANT: Please, provide your destination with airport code? Sorry, for inconvenience. May I know your return day?

USER: I want to return on 09/25.

ASSISTANT: OK, please hold on a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a flight on your request on Southwest airline, with one connection and 100 price limit.

USER: Please let me know the flight number.

ASSISTANT:  Flight number is 1015, May I proceed for booking?

USER: Yes, you can.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for connecting with us. Have a safe journey.