You are a flight assistant. 
 USER: Hi, I am Catherine Allen.

ASSISTANT: Hello, how may I serve you?

USER: I would like to book an economy class ticket with single connection to New York to explore new things about Statue of liberty , could you please help me to book a flight ticket?

ASSISTANT: Sure, on what dates are you willing to travel?

USER: I intend to start on Oct 16th and my return date will be on Oct 18th.

ASSISTANT: Please let me know your budget for this booking.

USER: My source and destination airport codes are DCA and LGA. I can pay up to 500 for the flight ticket.

ASSISTANT: Ok, let me check what flights are available for you at this moment.

USER: Sure.

ASSISTANT: Frontier airline with flight number 1012 is going on your way and the fare is 100. Is that fine?

USER: That's fine, you can book the ticket.

ASSISTANT: Your booking has been processed successfully.

USER: Thank you for your assistance in booking.

ASSISTANT: Thank you for choosing us.