You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I render you today?

USER: I am Patrick Brown.

ASSISTANT: Ok.

USER: Can you please help me in booking my flight ticket from OAK to LAX?

ASSISTANT: Sure, we are here to help you. May I know your travelling dates?

USER: My trip dates are June 14 and June 16.

ASSISTANT: Do you have any specifications?

USER: I need connecting flight.

ASSISTANT: Thank you for providing your details.

USER: Ok.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Sorry, there are no flights available from your source.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for availing us.