You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am planning to visit Detroit institute of arts in DTW. Can you avail me to book a connecting flight?

ASSISTANT: Sure, I will assist you with that. Can you please mention your preferable travel dates?

USER: My travel dates are Oct 16 and 18.

ASSISTANT: Can you please let me know your source airport code name?

USER: I want to start from Seattle, SEA.

ASSISTANT: May I know your name for further process?

USER: Karen Jackson here.

ASSISTANT: Do you have any another specifications?

USER: I want to depart in the evening time.

ASSISTANT: Is there any additional preferences do you have?

USER: Yes, I prefer business class.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us.