You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Samuel Moore. I would like to book a flight ticket from DFW to LAS. Can you help me or not?

ASSISTANT: Sure, can I know your preferable dates?

USER: Good, I am planning to start on 09/09 and return back 09/11.

ASSISTANT: I found a flight 1005 of Southwest airlines matches with your preferences, can I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you for the help.