You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking a flight ticket from OAK to SFO?

ASSISTANT: Sure, let me know your travelling dates.

USER: I want to fly on June 25 and return on June 27.

ASSISTANT: Do you want connecting flight or direct flight?

USER: I need a single connection.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: Myself James Davis.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for opting us.