You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Cynthia Jackson. Can you please help me in booking my flight ticket from OAK to SFO?

ASSISTANT: Sure, can I know the travel dates please?

USER: My travelling dates are Aug 14 and Aug 16.

ASSISTANT: Could you please provide the departure and return time?

USER: My depart flight ticket should be at evening time.

ASSISTANT: May I know the connection limit please?

USER: I need connecting flight to complete my trip.

ASSISTANT: Do you have any requirements?

USER: No.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: Ok, fine thank you for your information.

ASSISTANT: Thank you for approaching us.