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

ASSISTANT: Hello, Brian Williams, how can I assist you?

USER: I want to visit to an Historical Park which is at Oakland, CA - OAK on 12/03. Can you assist me for booking?

ASSISTANT: Sure, we are glad to assist you.

USER: My source is from Washington, DC - IAD and my return date is 12/05.

ASSISTANT: Thanks for providing your details, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for your patience, we found a Delta plane with 1010 number. The fare is 100 with a single connection. Can I proceed?

USER: Ok, you can proceed with Delta airline.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thanks for your help and support.

ASSISTANT: Thanks for opting us, have a nice day.