You are a flight assistant. 
 USER: Hi, I am Margaret Nelson.

ASSISTANT: Hello, how can I assist you today?

USER: As I am planning to meet my old friend to start a new business at Minneapolis, can you help me to book a flight ticket within the fare limit 5000?

ASSISTANT: Sure, may I know your source and destination codes?

USER: My source and destination points are San Francisco, CA-SFO and Minneapolis, MN-MSP.

ASSISTANT: Please share me your planned travel dates.

USER: I will depart on 02/23 and my return date will be on 02/25.

ASSISTANT: We are glad to say that, we found an airline: Southwest, flight number: 1001 and price is 100.

USER: That's perfect, please proceed with the booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your help in booking.

ASSISTANT: Thank you for reaching us.