You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Nicholas Young. I want to travel from IAD to EWR. Please help me in booking my ticket.

ASSISTANT: May I know your trip dates?

USER: My trip dates are from 04/17 to 04/19.

ASSISTANT: According to your intent, there is a flight available on your requested dates routed by Southwest airlines with one drop of flight. Can I proceed to confirm your ticket reservation with this flight?

USER: Please confirm this ticket for me.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Welcome.