You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you at this minute?

USER: I want to attend a Seminar in Las Vegas. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am here to help you with that. Can I know your planned trip dates?

USER: My travelling dates are May 31 and June 02.

ASSISTANT: May I know your airport codes?

USER: My airport codes are BOS and LAS.

ASSISTANT: Do you have any other requirements?

USER: I prefer business class.

ASSISTANT: May I know your name?

USER: My name is Alexander Baker.

ASSISTANT: Please wait for a minute.

USER: Ok, I will wait.

ASSISTANT: The American airlines are providing a flight having a connection limit 1. Can I proceed with the ticket booking?

USER: Please proceed.

ASSISTANT: Your flight ticket is confirmed in a business class and the flight number 1002.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us. Have a safe journey.