You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you at this moment?

USER: Can you aid me to book my ticket from HOU to DTW?

ASSISTANT: Sure, can you please let me know your travelling dates?

USER: My trip dates are Nov 18 and Nov 20 respectively.

ASSISTANT: Do you need any lay by in between journey?

USER: I prefer for single connecting flight.

ASSISTANT: May I know your good name please?

USER: Melissa King here.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I prefer to travel in business class.

ASSISTANT: Ok, please wait a moment. let me search a flight for you.

USER: Ok.

ASSISTANT: Thanks for waiting, there are no flights available at this moment matching your particulars.

USER: Thank you for the help.

ASSISTANT: Thanks for approaching us, wish you a nice day.