You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Me and my friends are planning to enjoy beer festivals with my first salary at Chicago, IL-ORD. So I need help to making my airline reservation.

ASSISTANT: Sure, may I know your source code?

USER: Source airport is Oakland, CA-OAK.

ASSISTANT: May I know your trip dates?

USER: My trip dates are from 06/28 to 06/30.

ASSISTANT: May I know your connection limit?

USER: I need single connection.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: I am happy to inform you that there is a Delta 1021 airline with price of 300  with matches your requirements. Shall I proceed?

USER: Sure, you can proceed for booking.

ASSISTANT: Your booking has been confirmed.

USER: Thanks for your kind service.

ASSISTANT: Thank you for approaching us. May I know your name ?

USER: My name is Jack Harris.

ASSISTANT: Thank you.