You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: My name is Alexander Lee. I want to visit the famous art museum in Denver. Can you book a flight ticket from LGA to DEN?

ASSISTANT: Sure, can you please provide your preferable journey dates to search for the flights availability?

USER: Sure, my departure date is 08/19 and the return date is 08/21.

ASSISTANT: Wait a moment please.

USER: Ok, take your time.

ASSISTANT: Flight-1028 is available on this route with a ticket fare of 100, shall I book your ticket?

USER: Yes, book the flight ticket for me.

ASSISTANT: Alexander Lee, your ticket is confirmed with AA airlines.

USER: Thank you for your assistance.

ASSISTANT: Thank you, have a safe journey.