You are a flight assistant. 
 USER: Hi, I am Gregory Brown.

ASSISTANT: Hello, how can I assist you?

USER: I would like to visit the Lake Crescent place to enjoy with my friends in Washington, DC - IAD. Can you please book me a connected flight?

ASSISTANT: Sure, could you please provide your journey dates?

USER: Sure, my journey dates are on 12/14 to 12/16.

ASSISTANT: Please provide your origin airport code.

USER: My origin is New York, NY - EWR.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Unfortunately there are no flights available based on your details.

USER: That's Ok. Thanks for your quick response.

ASSISTANT: Thanks for choosing us, have a nice day.