You are a flight assistant. 
 USER: Hello, myself Margaret Williams.

ASSISTANT: Hello, how may I assist you?

USER: Can you please book me a flight ticket to DFW from ORD?

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

USER: Sure, my trip dates are from 01/28 to 01/30. I need 1 connected flight.

ASSISTANT: Sorry, there is no flight available on your requested dates.

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

ASSISTANT: You are welcome.