You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to attend a Marathon event in Detroit, can you help me in booking the ticket from DEN to DTW?

ASSISTANT: Can I know your travel dates?

USER: My preferable dates are from 05/04 to 05/06.

ASSISTANT: Can I know your name?

USER: My name is Amy Green.

ASSISTANT: The flight 1007 of Delta airlines is available on your request.

USER: Please check that flight has 0 connection limit.

ASSISTANT: Sorry, I couldn't find any flight with 0 connection.

USER: Ok, please don't book my ticket.

ASSISTANT: Ok.

USER: Thank you for your information.

ASSISTANT: Thank you. You are welcome.