You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Book me a round trip to San Francisco, CA - SFO, could you please help me out in booking a flight ticket?

ASSISTANT: Sure, may I know your planned journey dates?

USER: My departure date is 08/23. My return date is 08/25.

ASSISTANT: May I know your name please?

USER: My name is Jonathan Jackson.

ASSISTANT: We found a Delta airline, flight number: 1010, price: 100 with one connection.

USER: Ok, please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.