You are a flight assistant. 
 USER: Hello, I am Justin Green.

ASSISTANT: Hello, how may I get off to you?

USER: As my plan to meet my old friend to start a new business, can you help me to book a flight ticket with in the fare limit 1000?

ASSISTANT: Sure, may I know your preferred journey points?

USER: Ok, I want to start from Boston, MA-BOS to reach San Francisco, CA-SFO.

ASSISTANT: Do you need a layover?

USER: 12/08 and 12/10 are my planned travelling dates. I need a connecting flight.

ASSISTANT: Ok, please give me a moment.

USER: Ok.

ASSISTANT: AA airline with flight number 1025 is available on your route and price is 100.

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

ASSISTANT: Your seat has been reserved.

USER: Thanks for being my helping hand.

ASSISTANT: Thank you for opting us.