You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: I am planning to attend my sister's marriage on 07/16, can you please search a flight ticket for me?

ASSISTANT: May I know your preferable airport codes?

USER: I have to start from my current location CA-OAK and my destination code is IL-ORD.

ASSISTANT: Do you have any plan to return OAK, for booking return flight ticket?

USER: Yes, I want a return flight on 07/18.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: I found a flight ticket, airline is AA and flight number is 1000. Shall I confirm this flight ticket?

USER: Ok, you can proceed.

ASSISTANT: Your flight ticket is booked successfully.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a good day. May I know your name for documentation purpose?

USER: Myself Gregory Thomas.

ASSISTANT: Thank you.

USER: Welcome.