You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Ronald Jackson want to visit Washington, can you book a ticket with price under 500?

ASSISTANT: Sure, I will help you out. May I know your travelling dates please?

USER: Sure, my travelling dates will be 06/04 and 06/06.

ASSISTANT: Can I know your airport codes please?

USER: Sure, I want to fly from MCO to DCA.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed with this flight?

USER: Yes, proceed with my booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.