You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Sharon Hernandez from Las Vegas. Me and my friends are planning to enjoy beers festivals at Boston, MA-BOS. So can you please help me in booking a flight ticket from NV-LAS?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: May I know on what dates would you like to travel?

USER: My trip dates are from 08/04 to 08/06.

ASSISTANT: Do you prefer any halt in between journey?

USER: I need a flag stop in between journey.

ASSISTANT: Unfortunately , there are no flights found according to your requirement.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for remaining positive.