You are a flight assistant. 
 USER: Hello. I am Patricia Walker.

ASSISTANT: Hello, may I know your name please? Yes, how can I help you?

USER: I am planning to visit Denver Botanical Gardens with my friends in DEN. Could you help me in booking a ticket from DFW?

ASSISTANT: Ok, please tell your travelling dates?

USER: My planning dates are from 08/11 to 08/13. Make sure that my connection limit should be 0.

ASSISTANT: There is a flight available with price 600. Sorry, there is no flight with 0 connection.

USER: That's so sad. Anyway thank you for your information.

ASSISTANT: Thank you and have a nice day.