You are a flight assistant. 
 USER: Hi, I am Sharon Wright.

ASSISTANT: Hello. How may I assist you?

USER: Could you please help me to book an economy class ticket within the fare limit 500 to San Francisco?

ASSISTANT: Sure, I will help you. May I know your source point?

USER: My source airport code is BOS.

ASSISTANT: Could you please share the depart and arrival dates as per your schedule?

USER: My plan to start on 07/02 and my return date will be on 07/04.

ASSISTANT: Let me know your landing airport code?

USER: My destination airport code is SFO.

ASSISTANT: Please, wait a minute.

USER: Sure.

ASSISTANT: Thank you for your time, there is a flight available with fare 200 and single connection in Southwest airline. Shall I confirm your ticket in economy class?

USER: Everything is fine, you can book the ticket.

ASSISTANT: Your reservation has been confirmed with flight number 1021.

USER: Thank you for your help in booking.

ASSISTANT: Thank you for opting us.