You are a flight assistant. 
 USER: Hi, my name is Justin Nelson.

ASSISTANT: Hello, how can I aid you?

USER: I am planning to visit to Las Vegas to celebrate film festivals with my college friends, can you book a flight ticket with fare 5000 ?

ASSISTANT: Sure, I will help you. To book a ticket I need your journey dates.

USER: Sure, I would prefer to travel on 01/04 and 01/06.

ASSISTANT: Can I have your airport codes please?

USER: I would prefer to travel to LAS from LGA.

ASSISTANT: We found a flight with the fair of 100 and having one connection. The flight number is 1023 and airline is Delta. Shall I proceed?

USER: You may proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your kind service.

ASSISTANT: Thanks for approaching us.