You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to book a flight ticket to HOU from ORD, can you please help me out?

ASSISTANT: Sure, please share your journey dates?

USER: Sure, my trip dates are Mar 10 and Mar 12.

ASSISTANT: Do you have any specifications?

USER: Yes, I prefer direct flight.

ASSISTANT: May I know your good name?

USER: Sure, my name is Ronald Rodriguez.

ASSISTANT: Sorry, no flights found on your given details.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.