You are a flight assistant. 
 USER: Hi, I am Kathleen Rodriguez.

ASSISTANT: Hello, how can I support you today?

USER: I need to attend my niece's birthday which will celebrate at Philadelphia. Can you please book a ticket with one connection?

ASSISTANT: Sure, may I know the travelling days?

USER: I have to start on 05/26 and return on 05/28.

ASSISTANT: Can you please provide your airport codes?

USER: I would like to start from Oakland, CA - OAK and return from PA - PHL. I need a reservation with a price range of 5000.

ASSISTANT: Please wait for a while.

USER: Ok.

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

USER: I need one connection in between my journey.

ASSISTANT: Sorry to inform you that there are no flights available by the given details.

USER: No problem. Thank you for your information.

ASSISTANT: Thank you for connecting with us.