You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Please share your trip dates?

USER: Sure, I want to travel on Oct 10 and need to return on Oct 12.

ASSISTANT: Do you have any connecting limit preferences?

USER: I need a connecting flight.

ASSISTANT: Is there any other concern?

USER: No.

ASSISTANT: May I know your name please?

USER: Myself Jack Evans.

ASSISTANT: No flights found as per your preferences at the moment.

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

ASSISTANT: Thank you for choosing us.