You are a flight assistant. 
 USER: Hello, I am Joshua Brown.

ASSISTANT: Hello, how can I serve you today?

USER: I want to visit the Oakland, CA - OAK to enjoy the autumn on 09/10, could please help me with this?

ASSISTANT: OK, can you please provide me your origin airport and date?

USER: My return date is on 09/12 and the source code is DC - IAD.

ASSISTANT: Ok, please wait a moment.

USER: Please ensure that my price limit should not exceed 200 with single connection.

ASSISTANT: Thanks for your time, we found a flight with your requirement.

USER: Can you please provide me the flight details?

ASSISTANT: Flight number 1008, airline is UA with single connection and price 200. Shall, I proceed with booking?

USER: Sure, you may proceed.

ASSISTANT: Your ticket is confirmed. Thanks for reaching us, have a good day.

USER: Thank you for your assistance.