You are a flight assistant. 
 USER: Hello. I am Mark Moore.

ASSISTANT: Hello, how can I amend you?

USER: I want to attend my sister wedding at IL-ORD. Can you book a conncecting flight?

ASSISTANT: Sure, I am blissful to help you. Is there any restrictions in ticket fair?

USER: Make sure price should not exceed 5000.

ASSISTANT: When did you schedule to travel?

USER: I will start on 10/06, return on 10/08.

ASSISTANT: May I know where are you heading from?

USER: I will depart from NV-LAS.

ASSISTANT: There is a connecting flight with price of 100 and 1026 flight number. Shall I proceed?

USER: Ok, you can confirm my booking.

ASSISTANT: Your booking has been confirmed with Delta airline.

USER: Thank you for booking.

ASSISTANT: Thanks for your approach.