You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Jack Edwards. I want to gather my old documents at LAX as my business purpose, can you please help me to book a ticket from LAS?

ASSISTANT: Sure, may I know your planned travel dates to check for the flight availability?

USER: I would like to fly on Mar-04 and return on Mar-06.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a halt.

ASSISTANT: Sorry, there are no flights available for your desired dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.