You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: My name is Donna Thomas, I want to book a flight ticket to DTW to enjoy my holiday trip, can you help me with booking a connecting flight?

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

USER: My travel dates are Oct 23 and Oct 25.

ASSISTANT: Do you want connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: May I know your boarding point?

USER: My source code is DCA.

ASSISTANT: Can you please share your return time?

USER: My return time should be morning.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: ok, no issues. Thank you.

ASSISTANT: Thank you for opting us.