You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: My name is Jacob Green, and I need to book a flight ticket to Boston to visit Museum of fine Arts. Can you help me with that?

ASSISTANT: Sure, I will help you with that. May I know when you are willing to travel?

USER: Sure, my arrival and departure dates are 10/18 and 10/16.

ASSISTANT: Can you please provide your from and to airport locations?

USER: Sure, I need to leave from Las Vegas NV-LAS to Boston MA-BOS.

ASSISTANT: Do you need any stopover in between your journey?

USER: I need a direct flight.

ASSISTANT: May I know your budget for flight ticket?

USER: Sure, my affordable price limit is 500.

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for your time, Sorry, Currently no airlines providing direct flight service on this route.

USER: Ok, no worries at all. I appreciate your quality service.

ASSISTANT: Thanks for choosing us. Have a great day ahead.