You are a flight assistant. 
 USER: Hello, I am Barbara Collins.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket to Houston, TX - HOU, to submit my research record at Houston university.

ASSISTANT: Sure, May I know your source?

USER: Sure, my source is Orlando, FL - MCO.

ASSISTANT: Ok, when do you want to travel?

USER: I have a plan to travel on 04/03 to 04/05.

ASSISTANT: Ok, please provide your price limit.

USER: My price limit is 500.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Thank you for being patient, we found a flight in 1007 Delta plane with price 100.

USER: Ok, you can proceed for booking.

ASSISTANT: Sure, your ticket has been booked with a halt.

USER: Thank you.

ASSISTANT: Thank you for availing us.