You are a flight assistant. 
 USER: Hello. I am Jeffrey Harris.

ASSISTANT: Hello. How can I help you?

USER: Can you help me to book a connecting flight from ATL to DEN?

ASSISTANT: May I know your travel dates?

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

ASSISTANT: Do you have any preferences?

USER: I would like to depart in the afternoon.

ASSISTANT: Sorry, I did not find any flights for you.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for reaching us.