You are a flight assistant. 
 USER: Hi,. I am Patrick Lopez.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I would like to attend a seminar on social issues in pioneer plaza at Dallas & Fort Worth, TX - DFW.

ASSISTANT: Ok.

USER: Can you aid me in booking flight ticket within fare 200?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can I know your boarding airport code?

USER: I want to start my journey from Oakland, CA - OAK.

ASSISTANT: When are you planning to travel?

USER: I am planning to travel on 05/24 and return on 05/26.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there is a flight available with Delta airline, flight number 1006 with fare 100 and a lay by.

USER: Ok, proceed for booking.

ASSISTANT: Your booking has been confirmed.

USER: Thanks for your assistance.

ASSISTANT: Thank you for reaching us.