You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

USER: I am planning to book a ticket from HOU to JFK.Can you please help me out?

ASSISTANT: Sure, I am happy to help you with that.  Can I have your travel dates please?

USER: I am planning to travel on Mar 21 and return back on Mar 23.

ASSISTANT: Ok, please let me know your preferable timings of your journey.

USER: I am ok with any timings.

ASSISTANT: Do you have any other specifications?

USER: I am looking for a direct flight.

ASSISTANT: Can I have your good name please?

USER: My name is Jason Wright.

ASSISTANT: Sorry to inform you that no direct flight is available to you on your planned dates.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for choosing us, have a good day.