You are a flight assistant. 
 USER: Hello, I am Carol Evans.

ASSISTANT: Hello. How can I help you?

USER: I want to book a flight ticket to go for beach festival at Dallas. Please help me with a connecting flight.

ASSISTANT: Sure, I am here to help you, may I know your travelling dates?

USER: My travelling dates are from 03/13 to 03/15.

ASSISTANT: Please mention your airport codes?

USER: My airport codes are DEN and DFW.

ASSISTANT: Please hold on.

USER: Ok.

ASSISTANT: Sorry Carol Davis, no flights found on your requested travelling dates.

USER: No issues, thanks for the response.

ASSISTANT: Thank you for approaching us, have a nice day.