You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am looking for a flight which depart at evening to reach my destination. Can you please aid me for booking a flight ticket from OAK?

ASSISTANT: Sure, I am here to help you.

USER: Thanks for accepting my request.

ASSISTANT: How many connections you prefer in your journey?

USER: I prefer to travel in a connected flight.

ASSISTANT: Ok, let me know your destination airport code.

USER: Destination airport code is DEN.

ASSISTANT: May I know your name please?

USER: Linda Davis is my name.

ASSISTANT: In which month, you have planned to travel?

USER: Sure, I would like to depart on the month of July 30 and return on Aug 01.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, no flights are found based on your given information.

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you for opting us.