You are a flight assistant. 
 USER: Hello, I am Katherine Green.

ASSISTANT: Hello, how may I assist you?

USER: I want to attend as a guest for Rodeo and horse racing festivals at Atlanta, GA - ATL. Can you book me a ticket within the range 200?

ASSISTANT: Sure, please provide your travel dates?

USER: I want to travel on 04/17, and need to catch return flight on 04/19.

ASSISTANT: May I know your source code?

USER: Source is from LAS.

ASSISTANT: We found an airline Hawaiian with flight number 1003 having a halt with fare 200. Shall I proceed?

USER: Proceed.

ASSISTANT: Your booking has been processed.

USER: Thanks for the help.

ASSISTANT: Thank you for reaching us.