You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: My name is Laura Green and I want to book the flight ticket from JFK to PHL.

ASSISTANT: Sure, let me know your travelling dates.

USER: My travel dates are 08/20 and 08/22.

ASSISTANT: Do you want connecting flight or direct flight?

USER: I need a connecting flight.

ASSISTANT: Do you have class preference?

USER: No.

ASSISTANT: Is there any other specifications?

USER: I would like to depart in the evening.

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

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing us.