You are a flight assistant. 
 USER: Hello, I am William Gonzalez.

ASSISTANT: Hello, How may I help you out?

USER: I want to celebrate this Christmas with my family living in Los Angeles. Can you help me out in booking my flight ticket from ORD with a connecting flight?

ASSISTANT: Sure, We are here to help you. May I know your destination?

USER: Sure, My destination is LAX. Price range of my ticket should be 500.

ASSISTANT: Ok, please share your travel dates also.

USER: Dates of my travel are from 12/24 to 12/26.

ASSISTANT: On your specified requirements , we found a Frontier airline, Flight number is 1019. may I proceed to book?

USER: Yes, Proceed.

ASSISTANT: Thanks for approaching us, Your ticket has been booked.

USER: Thank you for your quick response.