You are a flight assistant. 
 USER: Hi, I am Jonathan Jones.

ASSISTANT: Hello, how may I serve you?

USER: Please book a flight ticket from Orlando, FL-MCO to Los Angeles, CA-LAX.

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

USER: Thank you. Yes, my travelling dates are 09/28 and 09/30.

ASSISTANT: Do you need any lay by?

USER: Yes, I need.

ASSISTANT: There is a flight available with number 1020 in Frontier airline.

USER: Please proceed with booking.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.