You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

USER: Can you please book a flight ticket from the airport JFK to HOU?

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

USER: Thank you. My travel dates are Apr 10 and Apr 12.

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

USER: No but I need a single connecting flight to travel.

ASSISTANT: Can I have your good name please?

USER: My name is Ryan Parker.

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

USER: It's ok, not a problem with that. Thank you for searching the flights.

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