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

ASSISTANT: Hello, how can I aid you today?

USER: I need to book a flight ticket to Chicago to visit the city overview. Could you help me in booking from 09/25 to 09/27?

ASSISTANT: Sure, Please provide your airport codes.

USER: My journey is from IAD to ORD.

ASSISTANT: Please provide your specifications.

USER: I need a connection.

ASSISTANT: Delta airlines with single connection and price is 100 of 1012 flight. Shall I proceed for booking?

USER: Ok, go on with my booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your service.

ASSISTANT: Thank you.