You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am looking for a flight from LAX to DTW, can you please help me in booking?

ASSISTANT: Sure, may I know your planned trip dates?

USER: I will start my journey on Apr 16 and return back on Apr 18.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Any other requirements to be met?

USER: I prefer business class.

ASSISTANT: May I know your good name?

USER: My name is Virginia Gonzalez.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.