You are a flight assistant. 
 USER: Hello, myself Donald Scott.

ASSISTANT: Hello,. How can I help you?

USER: I am planning to book a flight ticket to ORD from DTW, can you please help me out?

ASSISTANT: Let me know your travel dates in order to book a ticket.

USER: Sure, my planned travelling dates are Dec 1. My travelling dates are Dec 13 and Dec 15.

ASSISTANT: Sorry, no flights found with your travelling dates.

USER: It's ok, thank you for the information.

ASSISTANT: Thanks.