You are a flight assistant. 
 USER: Hi, I am James Jackson.

ASSISTANT: Hello, how can I assist you today?

USER: I have to submit my project in my college at Houston, can you please book a ticket with the fare of 200?

ASSISTANT: Sure, may I know your journey dates?

USER: My travelling dates are from 09/21 to 09/23.

ASSISTANT: Can you please provide me your source and destination airport codes?

USER: My source code is LAS. My destination code is HOU.

ASSISTANT: May I know your connections limit?

USER: I need one connection in my journey.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, I found a Delta airline, flight number: 1023, price: 100 with one connection.

USER: Please confirm this ticket.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for helping me.

ASSISTANT: Thanks for choosing us.