You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: Can you find a flight ticket from OAK to EWR. Can you find a flight ticket for me?

ASSISTANT: Sure, May I know the travelling dates?

USER: Ok, my planned trip dates are on May 14 and May 16.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Is there any other requirements?

USER: No, thanks for asking.

ASSISTANT: May I know your name?

USER: Ok, I am Angela Moore.

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

USER: Ok, not a problem. Thank you for your help.

ASSISTANT: Thank you for opting us.