You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I assist you today?

USER: Please book a ticket from Los Angeles, CA-LAX to New York, NY-EWR.

ASSISTANT: Sure, please provide your price limit.

USER: Price limit 500.

ASSISTANT: Ok, please provide your journey dates.

USER: Journey dates are from 10/15 to 10/17.

ASSISTANT: Ok, May I know your name?

USER: My name is Mark King.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting. As per your request, we found a connecting flight in 1020 Spirit plane with price 100. Shall I proceed with booking?

USER: Please book a ticket.

ASSISTANT: Sure, your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for opting us.