You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: May I know your travelling dates please?

USER: I am departing on Feb 18 and return on Feb 20.

ASSISTANT: Do you have any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Is there any thing else?

USER: I want to depart in afternoon time and arrival time is afternoon time.

ASSISTANT: May I know your name please?

USER: My name is Jason Wright.

ASSISTANT: I am sorry no flights found on your route.

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

ASSISTANT: Thank you for choosing us.