You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Richard Taylor here.

ASSISTANT: Richard Taylor, how can I aid you today?

USER: I would like to spend my free time at Philadelphia, please help me in booking a ticket from LAS to PHL.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your travel dates please?

USER: My planned travel dates are on Dec 28 and Dec 30.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Sure, I need a connecting flight.

ASSISTANT: I found a flight for you with Spirit Airlines and it costs you 100. Shall I proceed to reserve a seat in a single connecting flight?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been booked with 1006 flight number.

USER: Thank you for your assistance.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.