You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Myself Carolyn Hernandez. I am looking for a flight from OAK to ATL, can you help me in booking with this flight?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, my planned travel dates are June 19 and June 21.

ASSISTANT: Do your prefer to travel in a direct flight or connecting flight?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other preferences?

USER: Yes, I would like to start my journey for the evening flight.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there is no flight available in this route.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: You are welcome.