You are a flight assistant. 
 USER: Hello,. I am Brenda Smith.

ASSISTANT: Hello, how can I assist you today?

USER: As I am planning to visit the Lopez Island in Washington with my childhood friends, to participate in the cycling. I would like to book a flight ticket.

ASSISTANT: Sure, Can you provide me your trip dates please?

USER: My depart will be on 09/09 and return on 09/11.

ASSISTANT: May I know your journey points please?

USER: My source point is PA-PHL and destination point is DC-DCA.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting unfortunately there is no flights found on your details.

USER: Thank you for your information.