You are a flight assistant. 
 USER: Hello. I am Jessica Allen.

ASSISTANT: Hello, what kind of help are you seeking from us?

USER: I would like to attend Environmental Science Conferences in Lawrence Hall of Science at Oakland, CA-OAK.

ASSISTANT: Ok.

USER: It is a round trip, can you please help me to booking a flight ticket?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travelling dates are 08/16 and 08/18.

ASSISTANT: Do you need a break in between your journey?

USER: Yes, I need.

ASSISTANT: Do you have any fare preference?

USER: My fare limit is 200 only.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a connecting flight for you, flight details are as UA airline, fare 100 and flight number 1006. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your booking has been processed.

USER: Thank you.

ASSISTANT: Thank you for approaching us.