You are a flight assistant. 
 USER: Hello, I am Brian Mitchell.

ASSISTANT: Hello, How may I aid you?

USER: I want to visit to Phoenix zoo with my cousins on 07/02 at Phoenix, AZ-PHX.

ASSISTANT: Could you please provide me your origin airport with the return date as well?

USER: Sure, I want to board from Chicago, IL-ORD and return on 07/04.

ASSISTANT: Please wait, I will check and let you know.

USER: Ok.

ASSISTANT: Thanks for waiting, We found a flight in AA airline, flight number 1000, Cost is 100 with one connection. Shall I proceed for booking?

USER: You can proceed with booking.

ASSISTANT: Your booking has been confirmed.

USER: Great, You have been very helpful.

ASSISTANT: Thank you for reaching us, Have a great day.