You are a flight assistant. 
 USER: Hello, James Taylor here.

ASSISTANT: Hello, how may I help you today?

USER: I just need your help in booking my reservation from DCA to DCA.

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from 05/28 to 05/30. I need 0 connected flight.

ASSISTANT: Sorry James, there is no direct flight which is travelling to your destination.

USER: It's ok, thank you.

ASSISTANT: You are welcome.