You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your good name, Please?

USER: Benjamin Campbell is my name.

ASSISTANT: How may I assist you for the day?

USER: I need to meet my uncle at Chicago. Can you please book me a flight with in fare of 500.

ASSISTANT: Sure, We can help you. May I know your airport codes, Please?

USER: Its is from PA - PHL to IL - ORD.

ASSISTANT: Please, Share your travel dates.

USER: My travelling dates are 07/25 and return on 07/27 with one connection.

ASSISTANT: May I know, Do you have any restriction on connections limit?

USER: I have already mentioned above.

ASSISTANT: OK. We found a flight with UA airline, Having flight number as 1009 matching your requirements. Shall I proceed with the ticket booking?

USER: Yes, you can.

ASSISTANT: Your ticket is booked. Thank you, For choosing us to book your ticket. Have a great journey.

USER: Thank you.