You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Please help me in booking flight ticket from LAS to ATL to attend meeting.

ASSISTANT: Sure, I am here to help you for this. When are you planning your trip?

USER: My trip dates are May 17 to May 19.

ASSISTANT: Is there any connection limit?

USER: I need a direct flight.

ASSISTANT: Do you have any other specifications regarding your journey?

USER: No.

ASSISTANT: May I know your name please?

USER: Kevin Carter.

ASSISTANT: Sorry for inconvenience, no flights are found with your specifications.

USER: Ok, no problem.

ASSISTANT: Thank you very much for approaching our agency.

USER: Thank you.

ASSISTANT: You are welcome.