You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hi.

USER: My name is David Brown and I want to book a ticket.

ASSISTANT: OK, may I have your journey details like source and destination?

USER: My origin airport code is AZ-PHX and destination airport code is MA-BOS.

ASSISTANT: OK David, please provide your preferable dates?

USER: My departure date is 01/06 and return date is 01/08. My price limit is 200 and the connections limit is 1.

ASSISTANT: As per your criteria there an airlines Sprint providing a flight to your destination. Shall I proceed for that flight David?

USER: Please proceed for booking.

ASSISTANT: David Brown, your ticket has confirmed . Hope you have a happy journey.

USER: Thanks for your help.