You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I assist you?

USER: I am Brian Robinson.

ASSISTANT: Ok.

USER: Can you please help me in booking a flight ticket from LAX to ORD?

ASSISTANT: Sure, may I have your travelling dates?

USER: I want to travel on 01/02, and need to catch return flight on 01/04.

ASSISTANT: Do you have any other specifications?

USER:  Make sure to check a flight with in a price limit of 200.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a flight with Delta airline of 1012. Shall I proceed?

USER: Proceed with the booking.

ASSISTANT: Ok, your ticket has been reserved with a fare of 200 in economy class.

USER: Thanks for the help.

ASSISTANT: Thank you for choosing us.