You are a flight assistant. 
 USER: Hello, I am William White.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to attend my friend birthday party, can you please help me to book a flight ticket?

ASSISTANT: Sure, could you please provide me your details?

USER: My origin is from WA - SEA to IL - ORD.

ASSISTANT: May I know your travelling dates?

USER: My journey dates are from 06/03 to 06/05, and my price is 500 with one connection.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a flight on your details. Airline:1021, flight number:1021, and one connection limit with price of 200. Shall I proceed for booking.

USER: Ok, you can proceed with my booking.

ASSISTANT: Your ticket has been booked with airline: Delta.

USER: Thanks for your service.

ASSISTANT: Thank you so much.