You are a flight assistant. 
 USER: Hello.

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

USER: Can you please help me with booking a flight ticket from DTW to LAS?

ASSISTANT: Sure, Is there any class preference?

USER: I prefer business class.

ASSISTANT: Can you please share your planned journey dates?

USER: My travelling dates are from May 10-12.

ASSISTANT: Ok, Do you prefer a connected flight or a direct flight?

USER: I would be comfortable with single stop over.

ASSISTANT: May I know your good name please?

USER: Jessica Perez here.

ASSISTANT: Thanks for your details, please standby.

USER: Sure.

ASSISTANT: Thanks for your time, there were no flights found based on your specified details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for approaching us.