You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me for booking from DTW to MCO?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My travelling dates are on May 09 and 11.

ASSISTANT: Which class do you prefer?

USER: I need an economy class.

ASSISTANT: Do you prefer a direct flight?

USER: I need a connected flight.

ASSISTANT: May I know your name?

USER: Catherine Roberts here.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry Catherine Roberts, no flights are available as per your requirements.

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us.