You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I serve you?

USER: I am Christopher Rodriguez. I want to book a flight ticket with the price limit is 500.

ASSISTANT: Ok, can I have your travel dates please?

USER: Sure, my departure is 07/28 and my return date on 07/30.

ASSISTANT: May I know your airport codes?

USER: I want a direct flight, I am planning to visit Statue of Liberty in NY - LGA and my starting point from TX - HOU.

ASSISTANT: Ok, please hold on. I will check and revert to you.

USER: Sure.

ASSISTANT: Thanks for being patience. I found a flight with one connection between your journey.

USER: I want a direct flight, don't proceed to booking.

ASSISTANT: Sorry, there is no direct flight.

USER: Thank you, for your service.

ASSISTANT: Thank you for reaching us.