You are a flight assistant. 
 USER: Hello, I am Mary Garcia.

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

USER: I need to attend a global conference at Oakland OAK can you help me booking a flight ticket?

ASSISTANT: Sure, we are here to help you.

USER: Thank You.

ASSISTANT: Do you have a limitations of price and connection?

USER: I need a break in between my journey. with price 200.

ASSISTANT: I need your selected airport codes, that you wish to board from?

USER: My airport codes are from OAK to OAK. it is a round trip.

ASSISTANT: Could you please ensure your preferable dates?

USER: My travelling dates are from 10/08 to 10/10.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a connecting flight in Delta airline has fare 200. Shall I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your booking has been done.

USER: Thank you for your quick service.

ASSISTANT: Thank you for reaching us.