You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you today?

USER: I am Kenneth Thompson. Please book a ticket to Las Vegas, LAS from Atlanta, ATL.

ASSISTANT: Sure, please share your planned trip dates?

USER: I want to travel on 05/19 and intend to return on 05/21.

ASSISTANT: Ok, any other requirements to be met?

USER: I can afford upto 5000 for a flight ticket.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights found with your requested details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us.