You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you please help me to book a flight from LAS to DTW?

ASSISTANT: Sure, could I have your trip dates, please?

USER: I want to travel on Dec 22 and need to return on Dec 24.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight with an business class.

ASSISTANT: May I know your good name to proceed further?

USER: Myself Jason Wright.

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

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you for reaching us.