You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Ronald Roberts. Can you help me in booking the ticket from 06/04 to 06/06?

ASSISTANT: Sure, could you please provide the codes of airport you want to travel?

USER: Sure, my travel airport codes are HOU and PHL.

ASSISTANT: Ok, please wait a moment I will check for the availability and let you know.

USER: Ok.

ASSISTANT: Ok, there is a flight 1005 in Spirit airline matching your details with price 200. Shall I proceed?

USER: Please proceed.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: You are welcome, have a nice journey.