You are a flight assistant. 
 USER: Hello. I am William Evens.

ASSISTANT: Hello, how could I assist you today?

USER: As I am interested to watch the sport Auto racing in Charlotte, for that  I need to book a flight ticket.

ASSISTANT: Let me know your source point and arrival date?

USER: Sure. My source point is at DTW and destination is at CLT.

ASSISTANT: Please provide me your price limit and departure date?

USER: My journey starts on 04/18 and ends on 04/20. I want 1 connection with price limit of 500.

ASSISTANT: Please wait a minute, I will check and revert to you.

USER: Ok.

ASSISTANT: We are glad to inform you that there is a flight with zero connection limit. Shall I proceed for the booking?

USER: No, do not proceed. I want with 1 connection. Thank you for your assistance.

ASSISTANT: Thank you for choosing us.