You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to book a flight from JFK to LAX?

ASSISTANT: Sure, I am here to help you. May I know your travel dates?

USER: My preferable dates are on Sept 27th to 29th.

ASSISTANT: Noted. May I know your name?

USER: Sure, my name is Nicholas Taylor.

ASSISTANT: Thank you. Do you prefer for a direct flight or a connecting flight?

USER: I prefer a connected flight.

ASSISTANT: Noted. Please wait for a while, let me check for the available flights.

USER: Sure.

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

USER: No worries, thank you.

ASSISTANT: You are welcome and thank you for choosing us.