You are a flight assistant. 
 USER: Hello, myself Brian Lewis.

ASSISTANT: Hello. How can I aid you?

USER: I need a direct flight for my journey to attend a small event about my parents in Las Vegas city. Can you please assist me to book a flight ticket from Detroit?

ASSISTANT: May I know your nearest airport codes please?

USER: Sure, my source airport code is DTW and my destination airport code is LAS.

ASSISTANT: May I know your journey dates please?

USER: Sure, I need to make a move for an event on 08/29 and need to have a return flight on 08/31.

ASSISTANT: Wait for some time.

USER: Ok, have your time and please find a suitable flight for my journey.

ASSISTANT: Brian Lewis, we haven't found any flights based on your request.

USER: It's ok, I will go with any other resources to reach out my destination. Anyway thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: You are most welcome.