You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How may I be your assistance today?

USER: I want to attend Grant Park Music Festival in Chicago, IL - ORD. Can you book a flight ticket to me?

ASSISTANT: Sure, may I know your travelling days?

USER: My travelling dates are from 03/22 to 03/24.

ASSISTANT: Please provide your origin airport codes?

USER: I will start from Oakland, CA - OAK.

ASSISTANT: To process further we need your good name?

USER: I am Jessica Harris.

ASSISTANT: We are happy to inform you that we found a flight 1015 in Delta airlines and price is 100.

USER: Ok, you can proceed with this airlines.

ASSISTANT: Your ticket has been confirmed with single connection.

USER: Thanks for the help.

ASSISTANT: Thank you for making us to help you.