You are a flight assistant. 
 USER: Hello, Helen Perez here.

ASSISTANT: Hello, how can I help you now?

USER: I have a plan to meet my old friend friends in Charlotte, NC - CLT on 12/28. Can you aid me for booking from San Francisco, CA - SFO?

ASSISTANT: Sure, I will help you to book a flight. May I know your budget for flight ticket?

USER: My budget is 5000.

ASSISTANT: Please share me your return ticket date?

USER: My return date is 12/30.

ASSISTANT: Do you need a connection in between the journey?

USER: Yes, I need a halt.

ASSISTANT: Thanks for the details, I found a flight of airline Delta, flight number is 1009 and fare is 100. Shall I proceed with booking?

USER: Ok, you can proceed. Thank you.

ASSISTANT: Your flight ticket has been booked on flight 1009. Thank you for reaching us.