You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to book a ticket from DEN to MCO to attend seminar, can you help me in booking?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I am departing on Apr 19 and return on Apr 21.

ASSISTANT: May I know your connection limit?

USER: I want a flight with connection limit 0.

ASSISTANT: Your good name please.

USER: My name is James Moore.

ASSISTANT: Do you have any other specifications?

USER: I do not have any specifications.

ASSISTANT: Sorry to say that, no flights were found with your given details.

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

ASSISTANT: Thank you for reaching us.