You are a flight assistant. 
 USER: Hello. I am Jason Hill.

ASSISTANT: Hello, how may I help you?

USER: I want to go on a vacation to Washington.Can you book a ticket from DFW to IAD?

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

USER: I want to fly on 10/15 and 10/17.

ASSISTANT: Please give me a minute.

USER: Sure, take your time.

ASSISTANT: Jason, there is a flight with AA airlines available with price 100. Shall I book the ticket for you?

USER: Ok, proceed to booking.

ASSISTANT: Your ticket is confirmed and the flight number is 1017.

USER: Thank you for helping me out.

ASSISTANT: Thank you for choosing us, have a good day.