You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jacob Moore.

ASSISTANT: What can I do for you?

USER: I want to travel from IL-ORD to NV-LAS for my brother birthday, could you please book a ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: I want to travel on these days 09/20 and 09/22.

ASSISTANT: As per your requirement I found a ticket for you.The price is 200 and flight number is 1027. Can I book a ticket for you?

USER: Please book this flight ticket.

ASSISTANT: Ok, I confirm your ticket successfully.

USER: Thank you for your service.

ASSISTANT: Thank you.