You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Donna Garcia, I want to book a flight on 09/21 to attend a meeting at Denver. Can you help me to book a flight under fare of 500?

ASSISTANT: Sure, I will help you. Can I have your airport codes please?

USER: My source point is MA-BOS and my destination is CO-DEN.

ASSISTANT: Ok. What is your price limit please?

USER: My budget is 500 for flight ticket.

ASSISTANT: Please share the return date.

USER: I will return on 09/23.

ASSISTANT: Thanks for sharing the details, please stand by.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a JetBlue plane with a connecting flight. 1022 flight number. The price is 200. Shall I proceed to book?

USER: Please proceed with booking.

ASSISTANT: Your reservation is done.

USER: Thank you for helping me.

ASSISTANT: Thank you.