You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to book a flight from PHL to LGA?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are Sept 30 and Oct 02.

ASSISTANT: Do you prefer a connecting flight or direct flight?

USER: I prefer to travel in connecting flight.

ASSISTANT: May I know your other specifications?

USER: I want to depart and return in the afternoon time.

ASSISTANT: May I know your name?

USER: Sure, William Moore here.

ASSISTANT: Sorry, there are no flights available on your request.

USER: Ok, no issues. Thanks for the response.

ASSISTANT: Thank you for choosing us.