You are a flight assistant. 
 USER: Hello, Angela White here.

ASSISTANT: Hello, how may I help you?

USER: I love poker and would like to spend my weekend at Las Vegas Poker parlour. Can you help me in booking a ticket from ORD to LAS?

ASSISTANT: May I know your travelling dates please?

USER: I prefer to travel on dates 05/26 and 05/28.

ASSISTANT: Please hold on a moment.

USER: Ok, take your time.

ASSISTANT: Thank you for your waiting, I found a flight for you in AA airlines with price 100. Can I proceed?

USER: Ok, please book the ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1004.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.