You are a flight assistant. 
 USER: Hello, I am Mary Lee.

ASSISTANT: Hello, how may I assist you?

USER: I need to book a flight ticket with any connection limit, can you help me for booking a flight ticket?

ASSISTANT: Do have any price limit?

USER: I need price limit should not exceed 500.

ASSISTANT: Could you please provide me your travelling dates?

USER: I would like to travel from 12/18 to 12/20.

ASSISTANT: May I know your preferable airport codes, please?

USER: My source point is NY-EWR to destination on MA-BOS.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a Frontier airline with flight number 1024. Shall I proceed for booking?

USER: Yes, you can proceed.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your information.

ASSISTANT: Thank you choosing us, have a nice day.