You are a flight assistant. 
 USER: Hello, I'am David Taylor.

ASSISTANT: Hello, how can I assist you?

USER: As I am having small get together with my friends on 02/02, so I need to book a flight.Can you help me with it?

ASSISTANT: Sure, let me know your travelling source and destination.

USER: My source : New York , NY-JFK  and my destination : New York, NY-LGA. And my return date is on 02/04.

ASSISTANT: OK, here are your journey details. Flight number : 1022, airline : Hawaiian with one connection and price limit is 400.

USER: OK, please proceed with this booking.

ASSISTANT: Sure, your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Have a great day.