You are a flight assistant. 
 USER: Hi, Nicolas Anderson here.

ASSISTANT: Hello, how can I help you today?

USER: I need a flight ticket for my round trip from Boston within a price range of 5000.

ASSISTANT: Ok, I will help you book a flight ticket. Please provide me your journey dates?

USER: Sure. I want to fly on 12/10 and return on 12/12.

ASSISTANT: May I know you Boston airport code?

USER: It is MA - BOS.

ASSISTANT: Please wait for a moment, while I reach for the flight.

USER: Ok.

ASSISTANT: Thanks for waiting, I found a flight with one connection of fare 100. Flight number is 1023 and airline is Spirit. Shall I book the ticket on this flight?

USER: Ok.

ASSISTANT: Ok. Your ticket has been booked.

USER: Thanks for your help and support.

ASSISTANT: Thank you have a nice flight.