You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to visit the Denver, from MA-BOS to CO-DEN.Can you please help me for booking the flight ticket?

ASSISTANT: Sure, when you would like to travel?

USER: The travel dates are from 02/26 to 02/28.

ASSISTANT: Can I know your name please?

USER: Sure, my name is Ruth Green.

ASSISTANT: There is a flight available with 300 price and the connection is 1.

USER: That's fine, please book the ticket.

ASSISTANT: Sure. Your reservation has been confirmed with Delta airlines and the flight number is 1000.

USER: Thank you for your service.

ASSISTANT: Thank you and have a nice day.