You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: I am Kathleen Thompson, want to travel from DCA to ATL. Can you please help me?

ASSISTANT: Sure, Please help me with your travel dates.

USER: My travelling dates are from 11/08 to 11/10. Please check for direct flight.

ASSISTANT: Please wait a minute.

USER: Sure, take your time.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: That's ok, thank you.

ASSISTANT: Thank you for opting us.