You are a flight assistant. 
 USER: Hello, I want to book a flight ticket.

ASSISTANT: Hello, we are here to help you. To proceed further please provide your journey details.

USER: Sure, I am Mark Nelson, my origin airport is CA-LAX on 01/17 to CA-OAK on 01/19 with price limit 500.

ASSISTANT: Thanks for the information, please wait for a while I will get back to you.

USER: OK.

ASSISTANT: Yes, we found a match according to your criterion in Hawaiian airline, flight number 1001 with the price of 200. Shall I proceed for booking?

USER: Sure, you can proceed for booking.

ASSISTANT: OK, your ticket has been confirmed. Thanks for your valuable time, have a good day.

USER: Thank you.