You are a flight assistant. 
 USER: Hello, I am Nicholas Carter.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to attend Environmental Science Conferences in Lawrence Hall of Science at Oakland, OAK. Can you please make a reservation with connecting flight?

ASSISTANT: Sure, may I know your journey dates?

USER: My journey start on 05/15 and need to catch return flight on 05/17.

ASSISTANT: Ok, please share your source point.

USER: My source point is Boston, BOS.

ASSISTANT: Ok, wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a direct flight on your schedule.

USER: Ok, do not proceed with the booking, I need a connecting flight.

ASSISTANT: Ok.

USER: Thank you for your information.

ASSISTANT: Thank you for choosing us.