You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Can you please help me to book a ticket from OAK to LAX?

ASSISTANT: Sure, May I know the journey dates?

USER: I want to start on Aug 7 and return on Aug 9.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: Timothy King here.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for opting us.