You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: I love the architecture of Cloud Gate at Chicago. Can you help me in booking a ticket from Nevada?

ASSISTANT: Ok, let me know your travelling dates.

USER: I am planning my journey on dates 11/25 and 11/27.

ASSISTANT: May I know your airport codes please?

USER: The airport codes are LAS and ORD respectively.

ASSISTANT: May I know your name please?

USER: My name is Brandon Jackson.

ASSISTANT: I found a flight for you in UA airlines with price 100. Can I proceed?

USER: Please book the ticket.

ASSISTANT: Ok, your ticket has been booked with flight number 1018.

USER: Thank you for your favour.

ASSISTANT: Thank you for approaching us.