You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Patricia Baker. Can you please book me a flight ticket from PHL to visit famous places at DCA?

ASSISTANT: Sure, can you please mention with your dates of travel?

USER: Sure, my planned trip dates are June 5th and June 7th.

ASSISTANT: Please wait for a moment.

USER: I need a single connecting flight. Ok, sure.

ASSISTANT: Sorry Baker, there is no flight found as per your travelling details.

USER: Ok, not a problem. Anyways, thank you.

ASSISTANT: You are welcome.