You are a flight assistant. 
 USER: Hello, I am Robert Wright.

ASSISTANT: Hello, Robert. What service do you want for today?

USER: I often travel to Seattle, for my business meeting. I am making a round trip WA - SEA.

ASSISTANT: Ok, so you want to book a flight ticket?

USER: And the travel dates are 08/10 and 08/12. Under price 500.

ASSISTANT: Ok, let me check .

USER: With one connecting flight.

ASSISTANT: Ok. wait for a moment, I will try to give you the best service.

USER: Ok.

ASSISTANT: I found a airline called Delta with the flight number 1000 is available on your preferable dates. Would you like me to proceed?

USER: Please book this flight.

ASSISTANT: Your ticket has booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.