You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I help you today?

USER: Dennis Jackson here. I want to book a flight ticket from IAD to SEA. Can you please help me with that?

ASSISTANT: Ok, may I know your planned dates?

USER: Yes, my planning dates are from 09/19 to 09/21.

ASSISTANT: The UA airline is available of flight number 1008 is available.

USER: Please make sure the price should not exceed 1000 with connection of only 1.

ASSISTANT: This flight is perfectly matching all your request.

USER: That's great. Please book the ticket for me.

ASSISTANT: Ok. Your reservation is done.

USER: Thank you.

ASSISTANT: Thank you for approaching us.