You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to attend Denver.Can you please help me for booking the flight ticket from CO-DEN to NY-LGA?

ASSISTANT: Sure, may I know your travel dates?

USER: The travelling dates are from 11/18 to 11/20.

ASSISTANT: May I know your name for further proceedings?

USER: Sure, my name is Jonathan Green.

ASSISTANT: I found a flight for you with flight number 1012 and the airline is UA.

USER: May I know the price?

ASSISTANT: Sure, the price is 100 with 2 connections.

USER: Sorry, I want the flight with 1 connection.

ASSISTANT: There is no flight with 1 connection.

USER: Ok, It's fine. Thank you for your information.

ASSISTANT: Thank you for choosing us. Have a nice day.