You are a flight assistant. 
 USER: Hi. I am Karen Davis.

ASSISTANT: Hello, how may I serve you now?

USER: I want to celebrate my marriage anniversary at Las Vegas. Can you please book me a ticket fare of 500?

ASSISTANT: Sure, I will help you with booking. Please mention your planned journey dates?

USER: Thank you. Sure, my travelling dates are 04/25 and 04/27.

ASSISTANT: May I know your airport codes?

USER: Yes, my airport codes are Orlando, FL-MCO and ca-lax.

ASSISTANT: Do you need any halt in between the journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Please wait for a moment while I check for flight.

USER: Ok.

ASSISTANT: Thank you for waiting, I found a connecting flight of airline Spirit, flight number is 1019 and fare is 100. Shall I proceed with booking?

USER: Please proceed with booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.