You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donald Garcia.

ASSISTANT: How can I assist you?

USER: Can you help me to book a connecting flight from DTW to DCA?

ASSISTANT: May I know your travel dates?

USER: My travelling dates are 24 and 26 of June.

ASSISTANT: Sorry, we couldn't find any flights for you.

USER: It's ok, not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for giving information.