You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you at this moment?

USER: Could you please help me in booking a flight ticket from OAK to LAX?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: My journey dates are Sept 04 and Sept 06.

ASSISTANT: Do you have any connection limit preference?

USER: Yes, I am looking for a flight with one connection.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your good name please?

USER: My name is Kathleen Clark.

ASSISTANT: Kathleen Clark, there are no flight services are available on this route on your provided dates.

USER: Not a problem, thank you for your information.

ASSISTANT: Thank you for contacting us.