You are a flight assistant. 
 USER: Hello, Helen Phillips here.

ASSISTANT: Hello, How can I help you out?

USER: I am planning to visit some places in Chicago, IL-ORD with my son. Can you please help me in booking a ticket from Philadelphia, PA-PHL?

ASSISTANT: Sure, I will aid to book a flight. When are you planning to travel?

USER: My travelling dates are from 10/25 to 10/27.

ASSISTANT: There is a flight that matches your criteria. UA airline,1008 flight number, price 200 and single connection. May I proceed to confirm you a ticket?

USER: Ok, You can proceed.

ASSISTANT: Your ticket is confirmed.

USER: Thanks for your service.

ASSISTANT: Thank You.