You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Please help me to book a flight ticket from PHL to JFK.

ASSISTANT: Sure, may I know the travelling dates?

USER: My travel dates are 14 to 16 of Apr.

ASSISTANT: Please help me with your connection limit.

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: Larry Clark here.

ASSISTANT: Please wait a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry, no flights found with your preferable dates.

USER: Oh! that very sad to hear, thank you.

ASSISTANT: Thank you for availing us.