You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to book a ticket from DEN to MCO, can you help me?

ASSISTANT: Can I know your travel dates?

USER: My travel dates are Nov 03 and 05.

ASSISTANT: Do you have any preference?

USER: I prefer a connecting flight.

ASSISTANT: Let me know your name.

USER: I am Jack Wilson.

ASSISTANT: Sorry, no flights found for your travelling dates. Thank you.

USER: No problem, thanks for checking.