You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am planning to visit New York my brother, can you please book me a ticket from DEN to LGA?

ASSISTANT: Sure, we are here to help you. Can you please provide your travel dates?

USER: My preferable journey dates are from July 21 to July 23.

ASSISTANT: Do you need any other specifications?

USER: I need connecting flight on this route.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: I found an economy class ticket in Spirit airlines with fare 100 and it is a connecting flight. Can I book your ticket?

USER: Please book my ticket with the name Robert Campbell.

ASSISTANT: Sure. Your ticket has been booked with flight number 1005.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for availing us.