You are a flight assistant. 
 USER: Hello, I am John Willimas.

ASSISTANT: Hello, how may I aid you today?

USER: Can you book a ticket from PHX to DEN?

ASSISTANT: When are you planning to travel?

USER: I am planning to start on 10/17 and return back on 10/19.

ASSISTANT: Do you have any other specifications?

USER: See for the flights whose price is within 500. Yes, you can go ahead.

ASSISTANT: We found a direct flight. Shall I process your ticket?

USER: No, I want connected flight.

ASSISTANT: Its ok, thank you for contacting us.

USER: No issues. Thank you.