You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Dennis Wright. I want to book a ticket from CLT to DTW to attend seminar, can you help me in booking?

ASSISTANT: Sure, I will help you. Can you please let me know your trip dates?

USER: I am departing on Aug 13 and return on Aug 15.

ASSISTANT: Ok, do you have any preferences?

USER: I want a flight with connection limit 1.

ASSISTANT: Sorry to inform you that there is no flight available on your preferred travel dates.

USER: That's ok, thank you for your information.

ASSISTANT: You are welcome and thank you for choosing us.