You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in booking the flight ticket from LGA to DTW?

ASSISTANT: Would you please provide me your itinerary travel dates?

USER: Preferred dates are Oct 02 and Oct 04.

ASSISTANT: Are there any more preferences that you want to avail?

USER: Make sure that business class required for my travel.

ASSISTANT: May I know your name please?

USER: Eric Davis here.

ASSISTANT: Eric Davis. I regret to inform that there are no flights on your route with the given dates.

USER: Not an issue. Thanks for checking.

ASSISTANT: Thank you for reaching us.