You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My planned travel dates are Dec, 29 and Dec, 31.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any particular time for departing and returning?

USER: No, thanks.

ASSISTANT: May I know your good name please?

USER: Gregory White here.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.