You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Carolyn Martinez here. I want to take part in Boston marathon, could you book my ticket from New York?

ASSISTANT: May I know your preferred travel dates please?

USER: I want to leave on Mar 25 and return on Mar 27.

ASSISTANT: Can I know your desired airport codes please?

USER: My genesis and terminus airport codes are JFK and BOS.

ASSISTANT: Do you have any class preference?

USER: I prefer economy class.

ASSISTANT: May I know your price limit?

USER: I can afford 1000 for my ticket.

ASSISTANT: There is a flight with connection limit 1 and fare 700, shall I proceed for booking?

USER: Please proceed.

ASSISTANT: Your ticket is booked, flight number 1021.

USER: Thank you for your expeditious service.

ASSISTANT: Thank you for opting us.